It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that when the Prophet (peace and blessings be upon him) got up at night (for prayer), he would say the takbir and then say: "O Allah, to You belongs all praise; You are the Sustainer of the heavens and the earth. To You belongs all praise; You are the Light of the heavens and the earth. To You belongs all praise; You are the Lord of the heavens and the earth and whatever is in them. You are the Truth, Your word is true, Your promise is true, the meeting with You is true, Paradise is true, Hell is true, and the Hour is true. O Allah, to You I have submitted, in You I have believed, upon You I have relied, to You I have turned in repentance, by Your help I have disputed (against falsehood), and to You I have brought my case for judgement. You are our Lord and to You is the return. My Lord, forgive me what I have concealed and what I have done openly, and what I have done before and what I have left after. You are my God; there is none worthy of worship except You."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10966