Tactical Formation

This is a conversion of the Tactical Formation spell from Pathfinder 1e

Any number of target creatures in range that form an unbroken chain of creatures within 5 ft. of each other each gain +2 AC, and can use their reaction at the end of any other target's turn to move up to their speed. If, after any reaction movement, a target ends its turn out of formation (the creature is not linked to the rest of the group with an unbroken chain of creatures within 5 ft. of each other), the spell ends for that creature.

This spell does continue to function with only a single creature under its effects, but shield of faith would be a superior spell for attempting to protect just one person.

A cleric who worships Torag can replace one of their 3rd level Domain spells with this spell. The decision to substitute a Domain spell must be made upon gaining a new level of cleric, but you can change your decisions on the matter when you level up again.