رَبِّ اشْرَحْ لِي صَدْرِي وَيَسِّرْ لِي أَمْرِي وَاحْلُلْ عُقْدَةً مِّن لِّسَانِي يَفْقَهُوا قَوْلِي
Rabbish-rahli sadri wa yassir li amri wahlul 'uqdatan min lisani yafqahu qawli
My Lord, expand my chest, ease my task for me, and untie the knot from my tongue so that they may understand my speech.
Musa (AS) said this when Allah sent him to confront Pharaoh. He asked for three things: an expanded chest (courage and peace of mind), ease in his mission (removal of obstacles), and eloquence (Musa had a speech impediment). For students, teachers, speakers, and anyone facing a daunting task — this du'a addresses the internal barriers (anxiety), external barriers (difficulty), and communicative barriers (inability to express yourself).
Related Du'as
اللَّهُمَّ يَا مُقَلِّبَ الْقُلُوبِ ثَبِّتْ قَلْبِي عَلَى دِينِكَ
O Allah, O Turner of hearts, make my heart firm upon Your religion.
Sahihاللَّهُمَّ عَلِّمْنِي مَا يَنْفَعُنِي وَانْفَعْنِي بِمَا عَلَّمْتَنِي وَزِدْنِي عِلْمًا
O Allah, teach me what benefits me, let me benefit from what You have taught me, and increase me in knowledge.
Hasanاللَّهُمَّ إِنِّي أَسْأَلُكَ عِلْمًا نَافِعًا وَأَعُوذُ بِكَ مِنْ عِلْمٍ لَا يَنْفَعُ
O Allah, I ask You for knowledge that is beneficial, and I seek refuge in You from knowledge that does not benefit.
Sahihاللَّهُمَّ إِنِّي أَسْتَخِيرُكَ بِعِلْمِكَ وَأَسْتَقْدِرُكَ بِقُدْرَتِكَ وَأَسْأَلُكَ مِنْ فَضْلِكَ الْعَظِيمِ فَإِنَّكَ تَقْدِرُ وَلَا أَقْدِرُ وَتَعْلَمُ وَلَا أَعْلَمُ وَأَنْتَ عَلَّامُ الْغُيُوبِ اللَّهُمَّ إِنْ كُنتَ تَعْلَمُ أَنَّ هَذَا الْأَمْرَ خَيْرٌ لِّي فِي دِينِي وَمَعَاشِي وَعَاقِبَةِ أَمْرِي فَاقْدُرْهُ لِي وَيَسِّرْهُ لِي ثُمَّ بَارِكْ لِي فِيهِ وَإِنْ كُنتَ تَعْلَمُ أَنَّ هَذَا الْأَمْرَ شَرٌّ لِّي فِي دِينِي وَمَعَاشِي وَعَاقِبَةِ أَمْرِي فَاصْرِفْهُ عَنِّي وَاصْرِفْنِي عَنْهُ وَاقْدُرْ لِيَ الْخَيْرَ حَيْثُ كَانَ ثُمَّ أَرْضِنِي بِهِ
O Allah, I seek Your guidance through Your knowledge, and I seek ability through Your power, and I ask of Your great bounty. You are capable and I am not. You know and I do not. And You are the Knower of the unseen. O Allah, if You know this matter is good for me in my religion, my livelihood, and the outcome of my affairs — decree it for me, make it easy for me, and bless me in it. And if You know this matter is bad for me in my religion, my livelihood, and the outcome of my affairs — turn it away from me and turn me away from it, and decree for me what is good wherever it may be, then make me content with it.
Sahih