Protection from Evil and Good

One willing creature you touch is protected
against certain types of creatures: aberrations, celestials, elementals, fey, fiends, and undead.
Creatures of those types have disadvantage on
attack rolls against the target. The target also
can't be charmed, frightened, or possessed by
them. If the target is already charmed, frightened,
or possessed by such a creature, the target has advantage on any new saving throw against the relevant effect.