Generation VI onwards

Successfully using Protect, Detect, Endure, Wide Guard, Quick Guard, Spiky Shield, King's Shield, or Baneful Bunker consecutively now divides the chance of success of Protect, Detect, Endure, Spiky Shield, King's Shield, and Baneful Bunker by 3 for each consecutive use, with a minimum (1/3)^6 (1/729 or ~0.1%) chance.[7]

If a damaging Z-Move targets a Pokémon that used Protect, the Z-Move will bypass Protect but only do 25% of the original damage. The effects of Protect are not lifted.

If powered up by a Normalium Z into Z-Protect, all of the user's lowered stats are reset.