Shield of Faith

From Player's Handbook, page 275.

Description
1st-level abjuration


 * Casting Time: 1 bonus action
 * Range: 60 feet
 * Components: V, S, M (a small parchment with a bit of holy text written on it)
 * Duration: Concentration, up to 10 minutes

A shimmering field appears and surrounds a creature of your choice within range, granting it a +2 bonus to AC for the duration.

Learned By

 * Classes: Cleric, Paladin
 * Subclasses: Sorcerer (Divine Soul), Wizard (Theurgy)