رَبِّ اشْرَحْ لِي صَدْرِي، وَيَسِّرْ لِي أَمْرِي، وَاحْلُلْ عُقْدَةً مِنْ لِسَانِي، يَفْقَهُوا قَوْلِي
Purpose Ask Allah to expand the heart and make speech clear.
When to Use Read this before speaking, teaching, presenting, or difficult conversations.
Source Quran 20:25-28

Transliteration

Rabbishrah li sadri, wa yassir li amri, wahlul `uqdatan min lisani, yafqahu qawli.

Meaning

My Lord, expand my chest, ease my task for me, and untie the knot from my tongue so they may understand my speech.