A very 'Legion' inspired piece. The man in the picture is the very talented actor, Paul Bettany. And if you look closely you can see something written on the windows. Thats the actual prayer TO Saint Michael in Latin, I believe. But here it is in English:
Saint Michael the Archangel,
defend us in battle;
be our protection against the wickedness and snares of the devil.
May God rebuke him, we humbly pray:
and do thou, O Prince of the heavenly host,
by the power of God,
thrust into hell Satan and all the evil spirits
who prowl about the world seeking the ruin of souls.