O Allah, make the best of my life its end and the best of my deeds their conclus — Evening Adhkar
اللَّهُمَّ اجْعَلْ خَيْرَ عُمْرِي آخِرَهُ وَخَيْرَ عَمَلِي خَوَاتِمَهُ
Transliteration: Allaahummaj-'al khayra 'umree aakhirahu wa khayra 'amalee khawaatimahu
Translation: O Allah, make the best of my life its end and the best of my deeds their conclusion.
Reference: Al-Hakim