Protection from Evil and Good

You sprinkle a tiny bit of holy water or powdered silver and cold iron on an ally, offering a prayer and warding them from harm from certain magical creatures.

Action - 1 Creature (Touch) - 1st Level (Abjuration) - VSM - Concentration (10 Minutes)

Buff

The target 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 can't be charmed, frightened, or possessed by those types of creatures. 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.

Classes:

Cleric, Druid, Paladin, Warlock, Wizard