Prophet saas used to seek refuge with Allah from cowardice, miserliness, old age, the torment of the grave and the tribulation of the heart. (Da'if)(One of the narrators) Waki' said: "Meaning when a man dies in a state of tribulation (Fitnah) and does not ask Allah to forgive him."
أَنَّ النَّبِيَّ ﷺ كَانَ يَتَعَوَّذُ مِنَ الْجُبْنِ وَالْبُخْلِ وَأَرْذَلِ الْعُمُرِ وَعَذَابِ الْقَبْرِ وَفِتْنَةِ الصَّدْرِ قَالَ وَكِيعٌ يَعْنِي الرَّجُلَ يَمُوتُ عَلَى فِتْنَةٍ لاَ يَسْتَغْفِرُ اللَّهَ مِنْهَا