Glory is to Allah, and praise is to Allah, and Allah is the Most Great.(each said thirty-three times...

Reference:Muslim 1/418, Whoever says this after every prayer will be forgiven his sins even though they be as the foam of the sea.Hisnul Muslim 69

سُـبْحانَ اللهِ والحَمْـدُ لله واللهُ أكْـبَر (ثلاثاً وثلاثين) لا إلهَ إلاّ اللّهُ وَحْـدَهُ لا شريكَ لهُ لهُ الملكُ ولهُ الحَمْد وهُوَ على كُلّ شَيءٍ قَـدير

Transliteration

Subḥānallāh. walḥamdu lillāh. wallāhu 'akbar, [each repeated 33 times] Lā 'ilāha 'illallāhwaḥdahu lā sharīka lahu. lahul-mulku wa lahul-ḥamdwa huwā`lā kulli shay'in qadīr.

Translation

Glory is to Allah, and praise is to Allah, and Allah is the Most Great.(each said thirty-three times)None has the right to be worshiped but Allah alone, He has no partner, His is the dominion and His is the praise and He is Able to do all things.