Du'a after calamity occurs

إِنَّا لِلَّهِ وَإِنَّا إِلَيْهِ رَاجِعُونَ، اللَّهُمَّ أْجُرْنِي فِي مُصِيبَتِي، وَأَخْلِفْ لِي خَيْرًا مِنْهَا

Inna lillahi wa inna ilayhi raji'un, Allahumma ajurni fi musibati, wa akhlif li khayran minha.

Indeed we belong to Allah, and to Him we shall return. O Allah, reward me for my distress and grant me something better in exchange.

Ṣaḥīḥ Muslim 918