Dua' Before Studying
Allahumma infa'nii bimaa 'allamtanii wa'allimnii maa yanfa' unii
O Allah! Make useful for me what You taught me and teach me knowledge that will be useful to me.

Dua' After Studying
Allahhumma inni astaodeeuka ma qara'tu wama hafaz-tu faradduhu 'allaya inda hagati elayhi
O Allah! I entrust You with what I have read and I have studied. O Allah! Bring it back to me when I am in need of it.

Dua' While Studying Something Difficult
Allahumma la sahla illama ja-'altahu sahla wa anta taj 'alu al hazana etha shi'ta sahla
O Allah! Nothing is easy except what You have made easy. If You wish, You can make the difficult easy.

Dua' For Anxiety
Allahumma inni a'oodhoo bika minal-hammi walhuzni, wal-'ajzi wal-kasali wal-bukhli wal-jubni, wa dal'id-dayni wa ghalabatir-rajaal
O Allah! I seek refuge in You from anxiety and sorrow, weakness and laziness, miserliness and cowardice, the burden of debts and from being oppressed by men.

Dua' For Distress
Allahumma rahmataka arjoo falaa takilnee ilaa nafsee tarfata 'aynin wa aslih-lee sha'nee kullahu, laa ilaha illa anta
O Allah! It is Your mercy that I hope for so do not leave me in charge of my affairs even for a blink of an eye and rectify for me all of my affairs. None has the right to be worshipped except You.