PHB
Stoneskin
4-level Abjuration
Casting Time: 1 action
Range/Area: Touch
Components: Verbal, Somatic, Material
Materials: 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.