Say thirty-three times each:

سُبْحَانَ اللَّهِ، وَالْحَمْدُ لِلَّهِ، وَاللَّهُ أَكْبَرُ

SubhaanAllahi, walhamdu lillaahi wAllahu 'Akbar

How perfect Allah is, all praise is for Allah, and Allah is the greatest.

Reference: Muslim 1/418, no.597