Wiktionary
fall prey
vb. To be affected, or overcome by a bad situation.
Usage examples of "fall prey".
They all craved it, and Sukeena had warned Hal that for lack of it they must soon sicken and fall prey to disease.
In the centre of the room a large section of the floor was bared sand, swept into elaborate designs that would soon fall prey to the dancers’.
But if he did not counter her, he would fall prey to her, and that would be worse.
He knew other innocents would fall prey to her hunger, but he could not protect them all.