وَلَئِنْ أَذَقْنَٰهُ رَحْمَةًۭ مِّنَّا مِنۢ بَعْدِ ضَرَّآءَ مَسَّتْهُ لَيَقُولَنَّ هَٰذَا لِى وَمَآ أَظُنُّ ٱلسَّاعَةَ قَآئِمَةًۭ وَلَئِن رُّجِعْتُ إِلَىٰ رَبِّىٓ إِنَّ لِى عِندَهُۥ لَلْحُسْنَىٰ ۚ فَلَنُنَبِّئَنَّ ٱلَّذِينَ كَفَرُوا۟ بِمَا عَمِلُوا۟ وَلَنُذِيقَنَّهُم مِّنْ عَذَابٍ غَلِيظٍۢ
How to read it
Wa la'in' 'adhaq'nāhu raḥ'matan mminnā min[m] baʻ'di ḍarrā'a massat'hu layaqūlanna hādhā lī wamā 'aẓunnu ssāʻata qā'imatan wala'in rrujiʻ'tu 'ilā rabbī 'inna lī ʻindahu lal'ḥus'nā . falanunabbi'anna -lladhīna kafarū bimā ʻamilū walanudhīqannahum mmin' ʻadhābin ghalīẓin
When we give him a taste of some Mercy from Ourselves, after some adversity has touched him, he is sure to say, "This is due to my (merit): I think not that the Hour (of Judgment) will (ever) be established; but if I am brought back to my Lord, I have (much) good (stored) in His sight!" But We will show the Unbelievers the truth of all that they did, and We shall give them the taste of a severe Penalty.
Translation: Abdullah Yusuf Ali

