"Protection." from Evil? Can someone check transcripts and see if he's already seen that name for it? "At the Worldwound people use it because it makes it harder for demons to attack you, but I think it's technically broader than that -"

"Protection." from Evil, but they've already strategically modified the relevant sources.  "It creates a defensive magical barrier and makes it impossible for summoned creatures to come into contact with you. It's commonly used at the Worldwound as a cheap shield."