Say this tasbeeh at least three times:
سُبْحَانَ رَبِّيَ الْعَظِيمِ
Pronunciation
Subhaana Rabbiyal-'Adheem
Meaning
Glory to my Lord the Exalted. The dua will be repeated with the emotions of the mind. Reciting this Tasbeeh at least three times is the conduct and instruction of Rasulullah (ﷺ). Most of the narrations have "Subhaana Rabbiyal-'Adheem" and some of the hadiths have "Subhaana Rabbiyal-'Adheem wa Bihamdihi".
Source: Sahih (Albani). Tirmidhi: 262
Read the hadith
حَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا أَبُو دَاوُدَ، قَالَ أَنْبَأَنَا شُعْبَةُ، عَنِ الأَعْمَشِ، قَالَ سَمِعْتُ سَعْدَ بْنَ عُبَيْدَةَ، يُحَدِّثُ عَنِ الْمُسْتَوْرِدِ، عَنْ صِلَةَ بْنِ زُفَرَ، عَنْ حُذَيْفَةَ، أَنَّهُ صَلَّى مَعَ النَّبِيِّ صلى الله عليه وسلم فَكَانَ يَقُولُ فِي رُكُوعِهِ " سُبْحَانَ رَبِّيَ الْعَظِيمِ " . وَفِي سُجُودِهِ " سُبْحَانَ رَبِّيَ الأَعْلَى " . وَمَا أَتَى عَلَى آيَةِ رَحْمَةٍ إِلاَّ وَقَفَ وَسَأَلَ وَمَا أَتَى عَلَى آيَةِ عَذَابٍ إِلاَّ وَقَفَ وَتَعَوَّذَ . قَالَ أَبُو عِيسَى وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
Hudhaifah narrated that : he performed Salat with the Prophet, and that while he was bowing he would say: (Subhana Rabbiyal Azim); "Glorious is my Lord the Magnificent" and while prostrating: (Subhana Rabbiyal A'la) 'Glorious is my Lord the Most High.' And he would not recite an Ayah mentioning mercy, except that he would stop and ask (for mercy), and he would not recite an Ayah mentioning punishment, except that he would stop and seek refuge (with Allah from it). [Sahih (Albani). Tirmidhi: 262]
Duas from IslamicAPI's Masnun Dua dataset (based on the Quran, hadith, Hisnul Muslim and Rahe Belayat). See the dataset