The governor of Chalcedon, Priscus, had made a decree that all of the inhabitants of the city take part in sacrifices to the deity Ares. Euphemia was discovered with forty-nine other Christians hiding in a house and worshipping God, in defiance of the governor's orders. Because of their refusal to sacrifice, they were tortured for a number of days, and then, all but Euphemia, sent to the Emperor for trial. Euphemia, the youngest among them, was separated from her companions and subjected to particularly harsh torments, including the wheel, in hopes of breaking her spirit. She was placed in the arena, where lions were sent out to kill her, but they instead licked her wounds. It is believed that she died of wounds from a wild bear in the arena.