The character can either endure the impact, destroy the planets before impact, or a combination of both.
The characters can not BFR.
The characters must remain in the same position, right in the path of the coming planets. They can not. Teleport, move, fly around, or anything else.
The characters can not stop the movement of the planets, so time stopping, freezing, slowing them down is out of the question.
The characters can not use the planets to destroy each other.
Now let's begin.