Not all a weird idea, it's been part of the game since 1E.
The 3rd level Circle of protection from evil basically emulates the scene in Dracula where Van Helsing draws the circle and the the others huddle within, while Dracula's brides hiss and snarl impotently at them through the night.
Prot. from evil was a charm and possession suppressor.
[Edit] Nope, just checked. Can't do this with it in 5E. Got to use Greater restoration (5th level spell available at 9th level).
Last edited by FreeTheSlaves; 18/12/22 11:50 AM. Reason: 5E RAW