A crash. A shout. Heavy breathing.
Tony knew the signs of Bruce in distress and was by his side in an instant. Now that he'd seen Big Green in action, his curiosity for Bruce's condition had subsided somewhat and Tony instead did his best to help keep The Other Guy at bay. Upon inspection, Tony found Bruce's right arm had sustained a deep cut and knew the injury meant trouble. Although the smaller man was doing his best to regulate his breathing again, Tony could see him beginning to shake slightly.
"Bruce. Bruce listen to me. Listen to my voice. Focus on me," Tony began as he grabbed the nearest towel not covered in grease to press onto the wound. "You're alright. You've made it through worse than this. I'm right here, alright? You'll be okay."
"Can't..." Bruce managed between gritted teeth as the shaking intensified. "...Hurts..."
"I know, Buddy. You have to fight it, though. I'm here and I'm gonna patch you up just as soon as you calm down. But you have to get it under control before I can help you." Tony knelt next to Bruce and pulled his arm to him, applying as much pressure as he dared to help stem the bloodflow. "Deep breaths, Bruce. Focus on my voice. You're in a safe place now and no one is going to hurt you. It's just the two of us."
Bruce grunted. He hated this. Hated having this monster inside of him that he knew would burst free the second he let his guard down. As it was, it was all he could do to remain conscious. He could feel The Other Guy at the back of his mind and in the tensing of his muscles, straining to get out. It was exhausting. Slamming his fists into the floor of the lab once, he could hear Tony trying to keep him grounded as Bruce forced himself to completely fill his lungs with air. He held the breath for a moment before exhaling quickly and the shaking seemed to subside slightly.
"That's it, Bruce. You've gotta breathe. You're gonna be okay. You can do it." Tony was careful not to use any trigger phrases in his coaxing. All it took was one thing, one wrong promise or any comment that wasn't about him, and the big guy would tear his way out again. "You've got this. Come on, Bruce. You've gotta keep breathing."
Slowly but surely Bruce's breathing evened out and shaking faded as his fists unclenched themselves. The threat had passed...But now he was so tired.
Tony waited a few moments before saying anything. "Bruce? How're you feeling?"
"Exhausted..." Bruce mumbled.
"I don't doubt it. Now, come on. You know how this whole doctor thing works better than I do. Help me get you fixed up." Tony swung Bruce's good arm over his shoulders and helped the other man to his feet.
Bruce stood on wobbly legs for a moment before collapsing against Tony's chest and wrapping his arms around him. "I hate this, Tony...Every time it hurts so bad..."
Tony returned the embrace and rested his chin against Bruce's head. "I know it does. But you're okay for now. It's alright, Bruce..."