Du'a of Prophet Musa (alaihi salaam)

 IN THE NAME OF ALLAH THE MOST GRACIOUS AND THE MOST MERCIFUL

 (At-Taha 25:28)

Good du’a for those with a tongue-tied (stammerers), and for every one who delivers speech in a public gathering.
May Allah reward u abundantly. It is such a practically using du'a in life for seek success in sha Allah (with Allah's will)  ^__^