Le jour de la délivrance

Gohan and Cell's waves collide, creating a crater in the Earth. As Gohan struggles to put all of his energy into his wave, Cell's wave begins to overtake his, despite the telepathic encouragement of Goku. Seeing that Gohan is losing, Piccolo comes to his aid and attacks Cell. Although the attack is deflected with no effort from Cell, he continues his efforts. Tien, Yamcha, and Krillin all join in, but it is all for nought. Just as it looks like Cell is going to win, Vegeta fires a giant beam directly at Cell, and this distraction is just enough for Gohan to make the final push and defeat Cell. The Perfect Android disintegrates into nothingness, thanks to Gohan's Kamehameha Wave, and the battle was won. (Source: Wikipedia)