Hadrat Muslim bin Hans (Radi Allahu Ta’ala Anhu) narrated that ALLAH’s messenger has exhorted him specially to recite the following seven times soon after the Maghrib Salaah (sunset Salaah) before talking to any one.
[O ALLAH save me from Jahannum]
In case you recite this supplication after Maghrib Salaah and it so happens that you die that night, you will be saved from the Fire. Similarly, if you make this supplication seven times after Fajr Salaah (morning Salaah) before speaking to any body.
[O ALLAH ! save me from Jahannum]
And if it so happens that you die that day, you will be saved from the Fire by the Command of ALLAH. [Sunan lbn Majah, Zad -ul- Ma’ad]
Hadrat Uthman (Radi Allahu Ta’ala Anhu) narrated:
I have heard the Prophet (SallAllahu Alaihi Wa Sallam) say that any one who says thrice the following dua daily in the morning and evening, he will remain safe and protected from every mishap, When entered upon the morning (and evening) with the name of ALLAH, with whose name nothing on the earth or in the firmament can do us any harm. He is All-hearing and All-knowing. (He should also repeat the following dua thrice) I seek refuge in the Absolute words of ALLAH from the mischief of all His created beings. [Adab-ul-Mufrid, Ibn Hibban, Hakim]