Stoneskin

Source: Player's Handbook, DND 5e Wiki

4th-level abjuration

Casting Time: 1 action

Range: Touch

Components: V, S, M (diamond dust worth 100 gp, which the spell consumes)

Duration: Concentration, up to 1 hour

This spell turns the flesh of a willing creature you touch as hard as stone. Until the spell ends, the target has resistance to nonmagical bludgeoning, piercing, and slashing damage.

Spell Lists: Artificer, Druid, Ranger, Sorcerer, Wizard