Reference : Hisn al-Muslim 122

لَا إلَهَ إِلَّا اللَّهُ
الْعَظـيمُ الْحَلِـيمْ،
لَا إِلَهَ إِلَّا اللَّهُ 
رَبُّ العَـرْشِ العَظِيـمِ،
لَا إِلَـهَ إِلَّا اللَّهْ
رَبُّ السَّمَـوّاتِ ورّبُّ الأَرْضِ
ورَبُّ العَرْشِ الكَـريم
Lā ilāha illallāh
al-`Aẓīmul-Ḥalīm, 
lā ilāha illallāh
Rabbu ‘l-`Arshi ‘l-'Aẓīm, 
lā ilāha illallāh
Rabbus-samāwāti wa Rabbu ‘l-arḍ 
wa Rabbu ‘l-`Arshi ‘l-Karīm.


There is none worthy of worship but Allah,
 the Mighty, the Forbearing. 
There is none worthy of worship but Allah,
Lord of the Magnificent Throne. 
There is none worthy of worship but Allah,
Lord of the heavens and Lord of the earth, 
and Lord of the Noble Throne.

Reference:
Al-Bukhari 8/154, Muslim 4/2092

Chapter: For one in distress