Source: Player's Handbook

3rd-level abjuration

Casting Time: 1 action
Range: Touch
Components: V, S
Duration: Concentration, up to 1 hour

For the duration, the willing creature you touch has resistance to one damage type of your choice: acid, cold, fire, lightning, or thunder.

Spell Lists. Artificer, Cleric, Druid, Ranger, Sorcerer, Wizard