Generation Viii
Pastel Veil
Protects the Pokémon and its ally Pokémon from being poisoned.
Detailed Effect
Prevents the Pokémon and its teammates from being poisoned. It also cures teammates of poisoning when it enters the battlefield.
Pokémon With Pastel Veil
2 canonical Pokémon forms can have this Ability.
Galarian Ponyta 
Galarian Rapidash 