Remove barriers of heart and tongue through these magical words

رَبِّ اشْرَحْ لِي صَدْرِي وَيَسِّرْ لِي أَمْرِي وَاحْلُلْ عُقْدَةً مِنْ لِسَانِي يَفْقَهُوا قَوْلِي

Rabbi ishrah li sadri wa yassirli amri wah lul uqdatan min lisaani, yaf kahu kauli

My Lord! Open my heart, and make my task easy for me, loosen the knot in my tongue, so that they may understand my speech.