When the Prophet (Allah bless him and give him peace) would be afflicted with a stressful trial, he would say, “O Living and Eternal Maintainer! By Your mercy I seek help!” [Tirmidhi]
يَا حَيُّ يَا قَيُّوْمُ بِرَحْمَتِكَ أَسْتَغِيْث
Ya Hayyu Ya Qayyum! Bi rahmatika astagheeth!