"I represent District Five. Our deaths are inevitable here as they were on the barricade." It's still flat statements and while the guilt surrounding the revelation of their rebellion's futility is nearly enough to consume him, Enjolras was never and will never be afraid to die in the name of liberty and virtue. He'll cling to his principles in Panem just as he'd clung to them on the barricade. With that thought in mind, he's able to be stronger, slipping more easily back into his old role.

As he regards Marius and his (rather poorly hidden) panic, a thought occurs.

"They-- It is not quite death as you might be expecting." Which didn't make it any less traumatic, of course, but Enjolras doesn't think Marius needs that much explained to him. There is, however, something truly awful about waking up from a decapitation and just being told to continue on with your life, and above all, be put into a position to experience it again. Perhaps that would be worth noting at some point when he doesn't suspect it might make Marius physically ill. "They can heal us here, and they're disinclined to let us simply die if we can compete again."