The dua of Prophet Younus (peace be upon him) was, ‘There is no god worthy of worship besides You. May You be Glorihed. I have been of the wrongdoers.” (Laa ilaaha illa ant, subhaanak inni kuntu min adhaalimeen). A Muslim never calls upon his Lord with these words concerning any matter, but his prayer is answered.” (Tirmidhi)
Shoaib's Blog 