Having to protect the unconscious rifter at where he is the only thing Bruce can do is to cast a barrier around himself right before the ceiling crashes onto him. The barrier manages to shave off the worst of the damage, but it still makes contact and Bruce grunts as he feels it scrape down painfully at his back. Nothing that'd cause bleeding, probably, all the same Bruce reaches behind with a wince and casts a quick healing spell to cover the surface wounds to stop any more chances of bleeding. Nobody really needed that.

With that taken care of Bruce focuses back to the fight, hearing the warden shout for them to take it down. Calling upon whatever mana he still had Bruce conjures up a large fireball and flings it right towards the flesh golem with a shout. That thing had already been causing trouble for long enough - now it was time to finish this.