FirePsychic
Fire and Psychic types: weaknesses, resistances and Pokémon
Fire and Psychic Pokémon take double damage from Water, Ground, Rock, Ghost and Dark moves and resist Fire, Grass, Ice, Fighting, Psychic, Steel and Fairy moves.
The balance is even: 5 weaknesses and 7 resistances or immunities.
Fire moves are super effective against Grass, Ice, Bug and Steel and not very effective against Fire, Water, Rock and Dragon. Psychic moves are super effective against Fighting and Poison and not very effective against Psychic and Steel.
To beat these Pokémon, your best pick is Water, Ground and Rock moves. Avoid Fire, Grass, Ice and Fighting moves, which deal little or no damage.
There are 3 Pokémon with this combination, such as Victini, Delphox and Armarouge.