It has been narrated from the Holy Prophet (S.A.W.W.) that any person who reads the following dua after Fajr prayers, will receive many benefits:
Allah takes an oath that if this person either prays it or keeps it on himself, he will further benefit with these 7 things:
1) He will be saved from accidental death.
2) He will be saved from the questioning of Munkar and Nakeer, in the grave.
3) The squeezing of the grave and darkness will not effect him.
4) All the doors of hell will be closed for you.
5) Saved from all types of sicknesses.
6) He will open all 8 doors of heaven for you.
7) You will be saved from oppressors and tyrants.
bismillahir rahmanir rahim
ا اِلٰهَ اِلَّا اللهُ الْجَلِيْلُ الْجَبَّار
la illaha illalahul jaleelul jabbaar
there is no god save allah, the glorious, the supreme.
لَا اِلٰهَ اِلَّا اللهُ الْعَزِيْزُ الْغَفَّارُ
la illaha illalahul azeezul ghaffaar
there is no god save allah, the mighty, the oft-returning.
لَا اِلٰهَ اِلَّا اللهُ الْوَاحِدُ الْقَهَّارُ
la illaha illalahul waahidul qah-haar
there is no god save allah, the one , the dominating.