Gabriel would like to not be killed by a Rit Zein and would have to have a word with the one that offed him. Ignoring the whole thing where he'd be too dead to do so.

Hearing Castiel's voice and realizing who it was, he lets his eyes fall closed again, the vague panic that was starting to bubble up at the thought of it potentially being a certain older brother returning to make sure he actually did the job draining out again. He didn't have the energy for emotions to last very long.

Once Castiel's gotten the healing ball rolling, Gabriel will be able to take over somewhat, even if he's too drained to do a proper job. As the blade starts being pulled out, Gabriel sucks in a pained breath before coughing, the taste of blood making itself known in the back of his throat. Great. A lung got nicked. Just what he needed on top of everything else.