رَبِّ إِنِّي مَسَّنِيَ الضُّرُّ وَأَنْتَ أَرْحَمُ الرَّاحِمِينَ
Transliteration
Rabbi inni massaniyad-durru wa anta arhamur-rahimin
English meaning
My Lord, indeed adversity has touched me, and You are the Most Merciful of the merciful.
When is it recited?
In illness and difficulty.
Source
Al-Anbiya 21/83 — Job's supplication
