لا إلهَ إلاّ اللّهُ العَظيـم الحَلِـيم، لا إلهَ إلاّ اللّهُ رَبُّ العَـرْشِ العَظِيـم، لا إلهَ إلاّ اللّهُ رَبُّ السَّمَـوّاتِ وَرَبُّ الأَرْضِ وَرَبُّ العَرْشِ الكَـريم
La ilaha illal-lahul-AAatheemul-haleem, la ilaha illal-lahu rabbul-AAarshil-AAatheem, la ilaha illal-lahu rabbus-samawati wa-rabbul-ardi wa-rabbul-AAarshil-kareem
Translation
None has the right to be worshipped except Allah, the Magnificent, the Forbearing. None has the right to be worshipped except Allah, Lord of the magnificent throne. None has the right to be worshipped except Allah, Lord of the heavens and Lord of the earth, and Lord of the noble throne.
When to recite
Recited when distressed or in a difficult situation.
Source / Reference
Al-Bukhari 8/154, Muslim 4/2092