Flame Body

If a Pokémon with Flame Body is hit by a move that makes contact, there is a 30% chance the attacker will become burned.

Game descriptions

Ruby, Sapphire, FireRed, LeafGreen, Emerald:Burns the foe on contact.
Diamond, Pearl, Platinum, HeartGold, SoulSilver:Contact with the Pokémon may burn the foe.
Black, White, Black 2, White 2:Contact with the Pokémon may burn the attacker.
X, Y, O.Ruby, A.Sapphire:Contact with the Pokémon may burn the attacker.
Sun, Moon, Ultra Sun, Ultra Moon:Contact with the Pokémon may burn the attacker.
Sword, Shield, B.Diamond, S.Pearl:Contact with the Pokémon may burn the attacker.
Scarlet, Violet:Contact with the Pokémon may burn the attacker.