لَا إِلَهَ إِلَّا اللَّهُ الْوَاحِدُ الْقَهَّارُ، رَبُّ السَّمَوَاتِ وَالْأَرْضِ وَمَا بَيْنَهُمَا الْعَزِيزُ الْغَفَّارُ
لَا اِلٰهَ اِلَّا اللّٰهُ الْوَاحِدُ الْقَهّارُ، رَبُّ السَّمَاوَاتِ وَالْاَرْضِ وَمَا بَيْنَهُمَا الْعَزِيْزُ الْغَفَّارُ
Laa 'ilaaha 'illAllahul-Waahidul-Qahhaar, Rabbus-samaawaati wal'ardh, wa maa baynahumal-'Azeezul-Ghaffaar
There is none worthy of worship but Allah, the One, the Victorious, Lord of the heavens and the earth and all that is between them, the All-Mighty, the All-Forgiving.
Aaishah (RA) narrated that the Messenger of Allah (ﷺ) used to say at night if he turned during sleep: (the dua is mentioned above)