اَللَّهُمَّ أَلْهِمْنِيْ رُشْدِيْ وَأَعِذْنِيْ مِنْ شَرِّ نَفْسِيْ

Allaahumma alhimni rushdi, wa a-‘idhni min sharri nafsi

O Allah, inspire me with my guidance, and protect me from harm of myself. Imran bin Husain (RA) narrated: “The Prophet (ﷺ) said to my father: ‘O Husain, how many deities do you worship?’ He said: ‘Seven. Six in the earth, and one above the heavens.’ He (ﷺ) said: ‘So which of them do you take for your ardent requests and fears?’ He said: ‘The one above the heavens.’ He (ﷺ) said: ‘O Husain, if you would but accept Islam, I would teach you two phrases that would benefit you.’ He said: “So when Husain accepted Islam, he said: ‘O Messenger of Allah, teach me the two phrases you promised me.’ So, he (ﷺ) said: “Say: (The dua is mentioned above)

Reference: Hasan (Ibn Hajar). Takhrij Mishkat: 3/24