This excerpt is taken from Sheikh Abu Hamza Abdul Khaliq Siddiqi's book Sahi Fazail-e-Amaal.
Sayyiduna Umar bin Khattab (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: Whoever recites this supplication when entering the market, Allah Almighty will record one million good deeds in his record, forgive one million of his sins, and raise him by one million ranks:
لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ يُحْيِي وَيُمِيتُ وَهُوَ حَيٌّ لَا يَمُوتُ بِيَدِهِ الْخَيْرُ كُلُّهُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ
“There is no deity worthy of worship except Allah, He is alone, He has no partner, His is the dominion and His is the praise, He gives life and causes death, He does not die, in His hand is all good, and He has power over everything.”
Reference: Sunan Tirmidhi, Book of Supplications, No: 3428, 3429 - Sunan Ibn Majah, Book of Trades, No: 2235 - Mustadrak Hakim: 138/1 -
Hakim declared it authentic and Allama Albani graded it as Hasan.