Stoneskin

4th-level abjuration
Casting time: 1 action
Range: Touch
Target: A willing creature within range
Components: V, S, M (diamond dust worth 100 gp, which the spell consumes)
Duration: Concentration, up to 1 hour
Classes: Artificer, Druid, Ranger, Sorcerer, Wizard
Subclasses: Cleric (Strength Domain), Fighter (Eldritch Knight), Paladin (Oath of The Ancients), Paladin (Oath of Conquest), Paladin (Oath of Redemption), Rogue (Arcane Trickster), Paladin (Oath of Vigilance)

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.