Until the spell ends, one willing creature you touch is protected against certain types of
Creatures -
Aberrations,
Celestials,
Elementals, fey,
Fiends, and
Undead.
The
Protection grants several benefits.
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.