In anime:
Mewtwo uses Hyper Beam! Deoxys dodges.
Deoxys uses a pink Hyper Beam! Mewtwo dodges.
Mewtwo gets inside of a blue bubble.
Deoxys duplicates.
They both fire a Uber-Omega-Hyper Beam at each other.
Ash jumps in the way and is burned to a crisp.
All the Pokemon cry, and the tears revive Ash.
The end.
Mewtwo uses Hyper Beam! Deoxys dodges.
Deoxys uses a pink Hyper Beam! Mewtwo dodges.
Mewtwo gets inside of a blue bubble.
Deoxys duplicates.
They both fire a Uber-Omega-Hyper Beam at each other.
Ash jumps in the way and is burned to a crisp.
All the Pokemon cry, and the tears revive Ash.
The end.