I liked the Dresden Files approach to this, it is having faith in something that repels vampires, not the things people have faith in. So the main character repels vampires with a pentagram necklace and his faith in magic.
I liked the castlevania one about how it's just a shape that confuses their vision for some reason.
Which was a crazy lore addition considering hell and Satan are totally real in that world.
Can handwave it away by saying that Christians chose the cross because it hurt supernatural things.
I liked the Dresden Files approach to this, it is having faith in something that repels vampires, not the things people have faith in. So the main character repels vampires with a pentagram necklace and his faith in magic.
I liked the castlevania one about how it's just a shape that confuses their vision for some reason.
Which was a crazy lore addition considering hell and Satan are totally real in that world.
Can handwave it away by saying that Christians chose the cross because it hurt supernatural things.