– يَا مُقَلِّبَ الْقُلُوْبِ ثَبِّتْ قَلْبِيْ عَلٰ دِيْنِكَ
Yaa Muqallibal-quluubi thabbit qalbii ‘alaa diinik. (Anas ibn Malik. Sunan at-Tirmidhi #2066)
O Turner of hearts, keep my heart steadfast on Your religion.
We should always be alert to the horrible possibility that our hearts turn away from the religion under the influence of Shaytan or our own inclinations towards evil. That is why we seek Allah’s help against that. It is reported by Um Salamah (ra) that the Prophet (sallallahu alayhi wa sallem) used to make this du’aa very frequently.
(Source: Khalid Baig’s commentary to du’aa #68 in the Accepted Whispers: Munajat-e-Maqbul)