Du'a for anxiety during exams

اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنَ الْهَمِّ وَالْحَزَنِ، وَأَعُوذُ بِكَ مِنَ الْعَجْزِ وَالْكَسَلِ، وَأَعُوذُ بِكَ مِنَ الْجُبْنِ وَالْبُخْلِ، وَأَعُوذُ بِكَ مِنْ غَلَبَةِ الدَّيْنِ وَقَهْرِ الرِّجَالِ

Allahumma inni a-uthu bika minal-hammi wal-hazn, wa a-uthu bika minal-ajzi wal-kasal, wa a-uthu bika minal-jubni wal-bukhl, wa a-uthu bika min ghalabatid-dayni wa qahrir-rijal.

O Allah, I seek refuge in You from worry and grief, from helplessness and laziness, from cowardice and miserliness, and from being overpowered by debt and the oppression of others.

Sunan Abī Dāwūd 1555