Ṣaḥīḥ reporting in supplication and praising Allah the almighty

«اللَّهُمَّ لَا سَهْلَ إِلَّا مَا جَعَلْتَهُ سَهْلًا، وَأَنْتَ تَجْعَلُ الْحَزْنَ سَهْلًا إِذَا شِئْتَ»
{وهو دعاء تسهيل الأمور إذا صعبت}

alllahumm la sahl illa ma jaealtah sahlan, wa'ant tajeal alhazn sahlan 'iidha shita.

O Allah, there is no ease other than what You make easy. If You please You ease sorrow.

It is a supplication which makes things easy when it gets difficult