Benever raised his shield and it did it's job, protecting him from the bullets, he didn't realise that Surv had thrown the grenade. Which it exploded and did a number on Benever's back, Benever was shoved forward from the blast, using his shield to keep himself up right as well as to protect himself from the bullets.
"SO, explosives, hahahhahahaah, You think explosives would take out a Sorcerer of MY CALIBER! THINK AGAIN YOU PATHETIC EXCUSE OF A LIZARDFOLK!!" With that, Benever began chanting in some strange language, but, it sounded familiar to Surv. Light seemed to appear from behind the shield, it continued to get brighter and brighter, then, "Incendia praemium orbis!!" A black fireball then shot out from behind the Shield headed towards Surv.
In some other part of the complex, we see Umuku, Watching the fight as it goes down. "You do realize that those two will eventually get here right?" "Ah, but my dear Umuku, you fail to realize the potential of your minions, Their potential, to fail." "Whatever you say, Still, they make it here, they get your phylactery for me, well, your kinda screwed when that happens."