O Turner of hearts
يَا مُقَلِّبَ الْقُلُوبِ، ثَبِّتْ قَلْبِي عَلَى دِينِكَ
Ya muqalliba-l-qulub, thabbit qalbi ala dinik.
"O Turner of hearts, keep my heart firm on Your religion."
Narrated by Anas ibn Malik. Sunan at-Tirmidhi 2140
A short reflection
The dua the Prophet ﷺ would repeat. He was asked: do even you fear, O Messenger of Allah? He said: hearts are between two fingers of the Most Merciful.