ربنا اتنا من لدنك رحمة وهي لنا من امرنا رشدا
” Our Lord! bestow on us Mercy from Thyself, and dispose of our affair for us in the right way.” Amen.
Quran, Chapter18 Surah Al Kahf, Verse (Ayat) 10
Al Kahf means Companions of the Cave.
Seven youths went to sleep in a cave in the reign of Emperor Decius. (Who reigned from 249-251 A.C.; and who was a violent persecutor of Christians) They awoke in the reign of Theodosius (the second) who reigned from 408-450 A.C.
The youths hid in the cave, but they trusted in Allah and made over their whole case to Him in prayer. Then they fell asleep and knew nothing of what was happening in the world outside.
(Tafseer from The Quran.Text Translation and Commentary by Abdullah Yusuf Ali)
One of my favorite prayer in my daily Azkars(اذكار) whenever I am feeling worried about something I say it and leave the rest to God.