Narrated Ibn Abbas:

When the Prophet got up at night to offer the Tahajjud prayer, he used to say:

Allahumma lakal-hamd. Anta qaiyimus-samawati wal-ard wa man fihinna. Walakal-hamd, Laka mulkus-samawati wal-ard wa man fihinna. Walakal-hamd, anta nurus-samawati wal-ard. Walakalhamd, anta-l-haq wa wa'duka-l-haq, wa liqa'uka Haq, wa qualuka Haq, wal-jannatu Han wan-naru Haq wannabiyuna Haq. Wa Muhammadun, sallal-lahu'alaihi wasallam, Haq, was-sa'atu Haq. Allahumma aslamtu Laka wabika amantu, wa 'Alaika tawakkaltu, wa ilaika anabtu wa bika khasamtu, wa ilaika hakamtu faghfir li ma qaddamtu wama akh-khartu wama as-rartu wama'a lantu, anta-l-muqaddim wa anta-l-mu akh-khir, la ilaha illa anta (or la ilaha ghairuka).

O Allah! All the praises are for You; You are the Sustainer and Protector of the heavens and the earth, and whatever is in them. All the praises are for You; You have the possession of the heavens and the earth and whatever is in them. All the praises are for You; You are the Light of the heavens and the earth; You are the King of the heavens and the earth and whatever is in them, and all the praises are for You; You are the Truth and Your Promise is the truth, and the Meeting with You is the truth, Your Words are the truth, and Paradise is the truth, and Hell is the truth and all the Prophets (peace be upon them) are the truth. And Muhammad ﷺ is the truth, and the Hour (Day of Resurrection) is the truth. O Allah! I surrender to You, I believe in You and depend on You, and repent to You, and with Your Help I argue (with my opponents, the disbelievers) and I take You as a Judge (to judge between us). Please forgive me my past and future sins; and whatever I concealed and whatever I revealed; and You are the One Who make (some people) forward and (some) backward. There is none who has the right to be worshipped but You or there is no other than You who has the right to be worshipped)].

Sufyan said that 'Abdul Karim Abu Umaiya added to the above, 'Wala haula Wala quwata illa billah' (There is neither might nor power except with Allah

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا سُفْيَانُ، قَالَ حَدَّثَنَا سُلَيْمَانُ بْنُ أَبِي مُسْلِمٍ، عَنْ طَاوُسٍ، سَمِعَ ابْنَ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ كَانَ النَّبِيُّ ﷺ إِذَا قَامَ مِنَ اللَّيْلِ يَتَهَجَّدُ قَالَ " اللَّهُمَّ لَكَ الْحَمْدُ أَنْتَ قَيِّمُ السَّمَوَاتِ وَالأَرْضِ وَمَنْ فِيهِنَّ وَلَكَ الْحَمْدُ، لَكَ مُلْكُ السَّمَوَاتِ وَالأَرْضِ وَمَنْ فِيهِنَّ، وَلَكَ الْحَمْدُ أَنْتَ نُورُ السَّمَوَاتِ وَالأَرْضِ، وَلَكَ الْحَمْدُ أَنْتَ الْحَقُّ، وَوَعْدُكَ الْحَقُّ، وَلِقَاؤُكَ حَقٌّ، وَقَوْلُكَ حَقٌّ، وَالْجَنَّةُ حَقٌّ، وَالنَّارُ حَقٌّ، وَالنَّبِيُّونَ حَقٌّ، وَمُحَمَّدٌ ﷺ حَقٌّ، وَالسَّاعَةُ حَقٌّ، اللَّهُمَّ لَكَ أَسْلَمْتُ، وَبِكَ آمَنْتُ وَعَلَيْكَ تَوَكَّلْتُ، وَإِلَيْكَ أَنَبْتُ، وَبِكَ خَاصَمْتُ، وَإِلَيْكَ حَاكَمْتُ، فَاغْفِرْ لِي مَا قَدَّمْتُ وَمَا أَخَّرْتُ، وَمَا أَسْرَرْتُ وَمَا أَعْلَنْتُ، أَنْتَ الْمُقَدِّمُ وَأَنْتَ الْمُؤَخِّرُ، لاَ إِلَهَ إِلاَّ أَنْتَ ـ أَوْ لاَ إِلَهَ غَيْرُكَ ـ ". قَالَ سُفْيَانُ وَزَادَ عَبْدُ الْكَرِيمِ أَبُو أُمَيَّةَ " وَلاَ حَوْلَ وَلاَ قُوَّةَ إِلاَّ بِاللَّهِ ". قَالَ سُفْيَانُ قَالَ سُلَيْمَانُ بْنُ أَبِي مُسْلِمٍ سَمِعَهُ مِنْ طَاوُسٍ عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ عَنِ النَّبِيِّ ﷺ.