The Prophet (ﷺ) used to say in his supplications:

اَللَّهُمَّ قَنِّعْنِيْ بِمَا رَزَقْتَنِيْ وَبَارِكْ لِي فِيهِ وَأَخْلِفْ عَلَيَّ كُلَّ غَائِبَةٍ لِي بِخَيْرٍ

Allaahumma qanni`ni bimaa razaqtani wa baarik lee feehi wa akhlif ‘alayya kulla ghaa'ibatin lee bikhayr

O Allah, make me content with the provision You have given me and bless me in it and appoint good for me in every thing which I do not have.

Reference: Hasan (Ibn Hajar). Futuhatur Rabbaniyyah: 4/383