This Dua is regarded as a special dhikr of masnun dhikr-
لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيْكَ لَهُ، لَهُ الْمُلْكُ، وَلَهُ الْحَمْدُ، وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيْرٌ
Pronunciation
Laa 'ilaaha 'illAllahu wa'hdahu laa shareeka lahu, lahul-mulku wa lahul-hamdu, wa Huwa 'alaa kulli shay'in Qadeer.
Meaning
None has the right to be worshipped except Allah, He is alone, without any partner, to Him belong all sovereignty and praise, and He is over all things omnipotent. Many hadiths are narrated about benefit of this dhikr. Many authentic reports commanded us to to recite this dua in every morning and evening 1 or 10 or 100 or 200 times, After every obligatory prayer, and generally without any time restriction.
Source: Bukhari: 3293
Read the hadith
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنْ سُمَىٍّ، مَوْلَى أَبِي بَكْرٍ عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ، لَهُ الْمُلْكُ، وَلَهُ الْحَمْدُ، وَهُوَ عَلَى كُلِّ شَىْءٍ قَدِيرٌ. فِي يَوْمٍ مِائَةَ مَرَّةٍ، كَانَتْ لَهُ عَدْلَ عَشْرِ رِقَابٍ، وَكُتِبَتْ لَهُ مِائَةُ حَسَنَةٍ، وَمُحِيَتْ عَنْهُ مِائَةُ سَيِّئَةٍ، وَكَانَتْ لَهُ حِرْزًا مِنَ الشَّيْطَانِ يَوْمَهُ ذَلِكَ حَتَّى يُمْسِيَ، وَلَمْ يَأْتِ أَحَدٌ بِأَفْضَلَ مِمَّا جَاءَ بِهِ، إِلاَّ أَحَدٌ عَمِلَ أَكْثَرَ مِنْ ذَلِكَ " .
Narrated Abu Huraira: Allah's Messenger (ﷺ) said, "If one says one-hundred times in one day: "None has the right to be worshipped but Allah, the Alone Who has no partners, to Him belongs Dominion and to Him belong all the Praises, and He has power over all things (i.e. Omnipotent)", one will get the reward of manumitting ten slaves, and one-hundred good deeds will be written in his account, and one-hundred bad deeds will be wiped off or erased from his account, and on that day he will be protected from the morning till evening from Satan, and nobody will be superior to him except one who has done more than that which he has done." [Bukhari: 3293]
Duas from IslamicAPI's Masnun Dua dataset (based on the Quran, hadith, Hisnul Muslim and Rahe Belayat). See the dataset