Part 2 of the previous drabble. The end of the quote says, "loving someone deeply gives you courage." I think this applies to Merlin perfectly.

Merlin was in pain. The physical, he could handle. But at the moment his heart hurt too. He could only see one way out of this—at least, only one where Arthur lived—and it terrified him.

He was distracted from his thoughts by a cry from Arthur, who appeared seconds later with guards on his heels.

And seeing his prince—his best friend—so willing to fight against such odds for him…

Merlin felt the power surge through him as he spoke a spell. Fear was no match against Merlin's heart for this man. For now, consequences be damned.