la ilaha illa anta subhanaka inni kuntu minaz-zalimin

This is the Dua of the one who was in the stomach of the whale. Nun, or Dhun-Nun, is the title of Prophet Yunus (alayhissalam). Nun is one of the names given to a fish or a whale.

This is the Dua that every one of us should memorize; we should be saying over and over again. This is the Dua of Yunus (alayhissalam).
This Dua is used at any type of problem, worry, or distress. The multitudes of darkness that Yunus was enveloped were far greater than any of our stresses: financial, family, or marital. Yet, Allah (SWT) pulled him out in the blink of an eye.

This Dua is so perfect because it is comprised of these three sentences:

1. Laa ilaaha illa anta 2. Subhaanak 3. inni kuntu minadh-dhalimeen

The first two sentences are praising Allah (two-thirds of the Dua). The last part is the recognition of one’s own deficiencies when it comes to Allah (SWT).

This is one of the most optimistic verses in the whole Quran: This Dua saves us from our distresses, any darkness or cloud in our life. Any issue that is troubling you, any anxiety or grief, this Dua will save you. insha'Allah