When things are going well and it frightens you
Refuge from four things, all of them about what you already have being taken.
اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ زَوَالِ نِعْمَتِكَ وَتَحَوُّلِ عَافِيَتِكَ وَفُجَاءَةِ نِقْمَتِكَ وَجَمِيعِ سَخَطِكَ
Allāhumma innī aʿūdhu bika min zawāli niʿmatik, wa taḥawwuli ʿāfiyatik, wa fujā'ati niqmatik, wa jamīʿi sakhaṭik.
“O Allah, I seek refuge in You from the passing of Your favour, from the turning of the wellbeing You gave, from the suddenness of Your punishment, and from all that displeases You.”
Written for the moment when life is good and you are quietly afraid of losing it.
The full narration
Abdullah b. Umar reported that Allah's Messenger (ﷺ) supplicated in these words:" O Allah, I seek refuge in Thee from the withdrawal of Thine blessing and the change of Thine protection (from me) and from the sudden wrath of Thine, and from every displeasure of Thine
Source
Ṣaḥīḥ Muslim · 6944
- Agreed upon as authentic (al-Bukhārī / Muslim)