The life of St Leo of Catania
Leo pressed him repeatedly to give up his sorcery and return to God, without success, and the two came finally into open conflict when Heliodoros forced his way into the church during the Divine Liturgy, attempting through his arts to throw the whole service into chaos.
Leo left the altar, wound his own omophorion around the sorcerer's neck, and marched him out through the church and into the public square, where he made him confess his misdeeds before the gathered city. He then ordered a fire lit, and, still bound to Heliodoros, walked into the flames himself; there the two remained until the sorcerer was consumed, while Leo, tradition holds, came away entirely untouched by the fire through the power of God working in him. Reports of the wonder reached as far as Constantinople, and the emperors Leo IV and Constantine VI later received him there with honor.
He died on February 20, 789, remembered as much for the sorcerer he confronted as for the poor he had spent a lifetime quietly serving.
