The spell Protection from Evil and Good has the following in its description:
Until the spell ends, one willing creature you touch is protected against certain types of creatures: aberrations, celestials, elementals, fey, fiends, and undead.
In a previous session, a player insisted that the wording "against certain types" meant that when one cast the spell, one selected the type of creature that the protection worked against - and the spell was basically worthless against the other listed creatures during that time.
For instance, if the spell were cast to protect the tank from a Vampire (undead), then the tank would not be protected against the Vampire's demon (fiend) minions.
This seems to be an overly specific interpretation of the spell.
Does the 'Protection from Evil and Good' spell protect from all listed entities, or just one?