Before facing something hard, the Qur'an gives you the dua of Prophet Musa — for a calm heart, an easier task, and clear speech. Students recite it before exams and interviews for exactly this.
“My Lord, expand for me my breast [with assurance] And ease for me my task And untie the knot from my tongue That they may understand my speech.”— 20:25-28 (Saheeh International)
Ask Noor can give you Rabbi ishrah li sadri in Arabic and transliteration and duas for focus and memory.
Ask Noor — free on the App Store