Du’aas before exams

What should one recite before a exam?

wa alaykumusalaam you can recite these du’aas
اللَّهُمَّ انْفَعْنِي بِمَا عَلَّمْتَنِي، وَعَلِّمْنِي مَا يَنْفَعُنِي، وَارْزُقْنِي عِلْمًا تَنْفَعُنِي بِهِ
Transliteration: Allahumma infa’ni bimaa ‘allamtani wa’allimni maa yanfa’uuni warzuqni ‘ilman tanfa’uni bihi.
Translation: Oh Allah! Make useful for me what you have taught me, (and) teach me knowledge that will be useful to me and grant me such knowledge that will benefit me.

اللَّهُمَّ لا سَهْلَ إِلاَّ ما جَعَلْتَهُ سَهْلاً، وأنْتَ تَجْعَلُ الحَزْنَ إذَا شئت سهلا
Transliteration: Allahumma la sahla illaa maa ja-‘altahu sahlan wa anta taj’alu al hazna idha shi’ta sahlan.
Translation: Oh Allah! Nothing is easy except what you have made easy. If you wish, you can make the difficult easy.
May Allah grant all those taking exams success in both this world and in the Akhirah