In the Neutronium Alchemist (or one of the books in the Nights Dawn series) a vampire basically says “I was Muslim but that cross only works if you believe it works”
E.g. it’s the fundamental belief of the person wielding it that has the “psychic” effect on the ghost/vampire/remnant.
Edit: apparently it was a ghost who was Sunni and it’s the belief of the ghost that does it. E.g. why the crucifix had no effect on him but a crescent, for example, may have.
In the Neutronium Alchemist (or one of the books in the Nights Dawn series) a vampire basically says “I was Muslim but that cross only works if you believe it works”
E.g. it’s the fundamental belief of the person wielding it that has the “psychic” effect on the ghost/vampire/remnant.
Edit: apparently it was a ghost who was Sunni and it’s the belief of the ghost that does it. E.g. why the crucifix had no effect on him but a crescent, for example, may have.