Morty vs gunfire

I moved on instinct, throwing myself uselessly between the weapon and the ectomancer. I tripped on a fragment of the ghost-dust-painted door and wound up falling in a heap on top of Mort and . . .
. . . sunk into him.
The world suddenly hit me in full Technicolor. It was so dark in here, the gunman an enormous, threatening shadow standing over me. His voice was hideous and so loud that my ears ached. The stench—unwashed body and worse things—was enough to turn my stomach, filling my nose like hideous packing peanuts. I saw the gunman’s hand tighten on the trigger and I threw my arm up. . . .
My black-clad, thick, rather short arm.
“Defendarius!” I barked, faux Latin, the old defense spell I’d first learned from Justin DuMorne, my first teacher. I felt the magic surge into me, down through my arm, out into the air, just as the gun went off, over and over, as some kind of restraint in the gunman’s head snapped.
Sparks flew up from a shimmering blue plane that formed in front of my outspread fingers, bullets and fragments of bullets shattering and bouncing around the room. One of them stayed more or less in one piece and smacked into the gunman’s calf, and he pitched abruptly to one side, still jerking the trigger until the weapon was clicking on empty.
I felt my mouth move as Mort’s voice—a voice that rang with a resonance and authority I had seldom encountered before, said, “Get off of me!”
If I’d been hurtled from a catapult, I don’t think I’d have been thrown away any faster. I flew off at an upward angle—and slammed painfully into the ghost-dust-painted ceiling of the study. I bounced off it and fell to the equally hard floor. I lay there, stunned, for a second.


Ghost Story Chapter 6, Page 53-54