Shield of Faith

1st-level Abjuration Spell (Concentration)

Casting Time: 1 bonus
Range: 60 feet
Components: V, S, M (a small parchment with a bit of holy text written on it)
Duration: 10 minute (concentration)

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

Source: Player's Handbook (2014)