Hisnul Muslim · Dua 72 of 267
What to say after completing the prayer
((لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ يُحْيِي وَيُمِيتُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ)) عَشْرَ مَرّاتٍ بَعْدَ صَلاةِ الْمَغْرِبِ وَالصُّبْحِ.
How to read it
La ilaha illal-lahu wahdahu la shareeka lah, lahul-mulku walahul-hamd, yuhyee wayumeet, wahuwa AAala kulli shayin qadeer.(ten times after the maghrib & fajr prayers)
English meaning
None has the right to be worshipped except Allah, alone, without partner, to Him belongs all sovereignty and praise, He gives life and causes death and He is over all things omnipotent.(ten times after the maghrib and fajr prayers)
Repeat 10 times