The Favor
The following story line is mine. Don't try to copy it cause I'll get mad
In a like vain, Star Trek The Next Generation and all characters are the sole property of someone other than me.

"What do you mean he's a Cardassian?" Dar'Kon roared, "What else could he be?"
"He is a member of the Dominion" Data replied.
"WHAT?" Dar'Kon roared again.
"We do not, of course, have much information regarding Dominon physiology, however, that is how I would interpret this information" Data said, offering the tricorder to Dar'Kon. The Cardassian Ambassador waved it away. He turned back to Karchock.
"Is this true?" he demanded of the younger man. Karchock took a moment to look back and forth between his Cardassian guards. Then, his form began to change. It sort of...melted and then melded back together, in a more humanoid form. It was very obvious now that he was Dominion, but nobody had further chance to do anything about it because he was slipping out of his harnesses, which had been set for the much larger Cardassian form, and being transported away. Sarkon, in her nearby cell, was being transported away as well.
"Will!" Jean-Luc shouted over his com badge.
"Too late, sir" Will replied, "They're already out of range"
"Impossible!" Dar'Kon shouted, "No ship is that fast!"
"They were hiding out behind the fifth planet, sir" Will told them, ignoring the Cardassian's outraged exclimation. Jean-Luc sighed.
"Nar'Kon" Jean-Luc said, "May I suggest we meet aboard the Enterprise so that we may include the other Ambassadors" Dar'Kon looked as if he were about to say absolutely not.
"I think we had better do something" Nar'Lan agreed, "The Dominion must be up to something"
"I agree" Dar'Kon added, "Yes, Captain, we will meet aboard your ship in an hour"
"Very well" Jean-Luc nodded and half a minute later was back on the Enterprise, waking his command crew. He was surprised to see Raylyn stride into the Observation lounge, head high, as if she hadn't just spent the last 24 hours in mortal danger.
"Raylyn, what are you doing here?" Jean-Luc asked gruffly, his voice lowered so none of the delegates would hear. She didn't bother to look up at him.
"Save it, Papa. I've already had it from everyone else" she said just as quietly. He heard a steel beneath her voice that he recognized well. He often had it in his own when he'd made decisions others had not agreed with. He didn't bother responding, he simply took his chair.
"Commander" Ka'lar nodded at his daughter when the Klingon pair walked in, "You recovered quickly"
"I always have" Raylyn said politely. Ka'lar nodded. Klingons understood Raylyn's warrior's pride, even if her family didn't.
"I hope your child was unharmed" Spock said.
"As far as my mother was able to determine, my children will suffer no long term affects" Raylyn answered. Only Deanna, her Imzadi, could hear the terror that had been relieved by that diagnosis.
"Captain"
"Ambassador Ro" Jean-Luc nodded at her, "I'm sorry about the hour"
"It's fine. I was already awake" she answered with a flip of her hand. Unlike the Enterprise, which was set to Earth's days, the planet below was in early morning. Finally the Cardassians arrived. Geordi, Data and Wyatt (who had been included because of his work on the antidote) had given their seats up so that their superiors could all be seated.
"What action do you plan on taking, Captain?" Dar'Kon asked immediately. So much for pleasantries.
"I don't have a plan as of yet, Dar'Kon" Jean-Luc answered.
"The logical course of action would be to follow the Dominion ship to determine it's purpose in the assassination attempt on Commander Picard- Riker" Spock stated.
"The ship is well beyond our long distance scanning ranges, Ambassador" Data informed the elderly Vulcan.
"What about an ion trail?" Worf wanted to know.
"The ship did not leave a detectable ion trail" Data added.
"How is that possible?" Nar'Lan growled.
"Whatever technology they've developed to get them out of this system so fast, it's nothing we've ever seen before" Geordi told her, "It's possible they've found a way around leaving a detectable ion trail"
"Is there any other way to follow the ship?" Lwaxana asked. She was all business tonight.
"Not without more information about their propulsion system" Geordi answered.
"Then what /will/ we do?" Dar'Kon asked. Nobody said anything at first.
"Perhaps we should attempt to discover the reason for their aggression before we embark on any action" Spock suggested logically.
"Do you think this could mean that the Dominion is winning the war with the Borg?" Deanna suggested.
"And they're worried about turning around and facing a united sector after their losses?" Will put out.
"Any creature with more than a kopek of a sense would take the time to rebuild their forces after a war before launching another attack" T'auri said.
"Yes, but they are no doubt aware that we are prepared to attack first" Jean-Luc said. He hoped he hadn't just revealed top secret information.
"It is dishonorable to attack a helpless foe" Worf said, "However, only a fool would think to pass up this tactical opportunity. The Dominion will never be helpless"
"Nor will the Borg. The question is, which side is winning" Lwaxana interceded.
"The logical conclusion would be that the Dominion is" Spock said, "They would otherwise have no logical motive for their recent actions"
"Yes, but while the Borg often follow logical patterns, the Dominion is just as unpredictable as humans" Raylyn spoke for the first time. Spock nodded his agreement.
"I think the one thing we can safely assume from this incident" Jean- Luc said, "Is that the war between the Dominion and the Borg is drawing to an end. Which means we need to be ready for them. That will require a united sector" He turned to the Cardassians.
"Ambassador Dar'Kon, Nar'Lan, the Federation would welcome the Cardassians as allies"
"As would the Klingons" Ka'lar added.
"And Romulus" T'auri said. They all held their breath for the Cardassians answer. Dar'Kon stood, and so in turn did every one else.
"Bach Ta haa Shi" Dar'Kon said, and shook Jean-Luc's hand.
It translates as "Let us be Friends"