You stretch out your hand to draw a protective mark in the air to make yourself resistant to bludgeoning, piercing, and slashing damage caused by weapon attacks before the end of the next round.
Blade Ward 5e
Level: Cantrip
Classes: Warlock, Sorcerer, Bard, Wizard
Casting Time: 1 Action
Range: Self
Components: V, S
Duration: 1 round