When an attack roll hits you and its damage includes Bludgeoning, Piercing, or Slashing damage, you can take a Reaction to reduce the attack’s total damage against you. The reduction equals 1d10 plus your Dexterity modifier and Monk level.
If you reduce the damage to 0, you can expend 1 Focus Point to redirect some of the attack’s force. If you do so, choose a creature you can see within 5 feet of yourself if the attack was a melee attack or a creature you can see within 60 feet of yourself that isn’t behind Total Cover if the attack was a ranged attack. That creature must succeed on a Dexterity saving throw or take damage equal to two rolls of your Martial Arts die plus your Dexterity modifier. The damage is the same type dealt by the attack.