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).
I'm actually kinda disappointed in the Baldur's gate 3 version of PfGaE. In Icewind dale (which I am most familiar with) it's one of the best defensives moves in the game because of that charm protection. Also being unable to be targeted by enemy summons. Seems like in 3 beyond the story specific uses to unlock that underdark door there are way better defensive spells.
