5-level Abjuration (ritual)
You touch a creature and infuse it with holy (or unholy) power. The creature gains an aura that extends out to 20 feet. Any creature within this aura is subject to the following effects. First, celestials, elementals, fey, fiends, and undead can’t enter the aura, nor can such creatures charm, frighten, or possess creatures within it. Any creature charmed, frightened, or possessed by such a creature is no longer charmed, frightened, or possessed upon entering the area. You can exclude one or more of those types of creatures from this effect. If such a creature would be forced to enter the aura it must, if possible, use its reaction to retreat as far as it can from the aura. If one of the selected creature types begins its turn inside of the aura, it must spend its full action to move as far from the aura as it possibly can. Any friendly creature within the aura may ignore the effects of difficult terrain and regains 1 hit point at the start of its turn.