Maxwell leaping off of a roof, St George slashing Cairax

Behind the demon, Max leaped from the rooftop and drifted toward the ground. Clouds of light billowed off his hands like steam. His lips were moving, but St. George couldn’t hear the words.
Cairax Murrain stalked forward and St. George threw himself at it. He thought of every Conan and Beastmaster movie he’d watched as a teenager and brought the sword down with a roar. The demon put up its arm and the blade bit into the flesh. It felt like cutting into a tire. The hero pulled back and swung the blade again. It cut into the meat of Cairax’s forearm and hit a bone that could’ve been solid rock.

Excerpt From Ex-Communication, pg 490
Peter Clines
https://books.apple.com/us/book/ex-communication/id635706546