But if you do not believe me, then leave me alone." (44:21)

Almuntakhab Fi Tafsir Alquran Alkarim

And it you do not pin your faith upon me and you think I am open to suspicion then leave me alone and keep me out of harms way

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(44:21) But if you do not believe what I say, leave me alone *19 (and desist from laying hands on me).'

But if you do not believe me, then leave me alone." meaning

*19) This was said at the time when, as against alI the Signs presented by the Prophet Moses, Pharaoh was still showing stubbornness, but was feeling upset and confounded at the realization that all classes of the Egyptian society were rapidly being influenced by those Signs. In that period first of all he made the speech before his full packed court as mentioned in vv. 51-53 of Surah Zukhruf above (see E,N.'s 45 to 49). Then, when he felt the ground slipping from under his feet, he made up his mind to kill Allah's Messenger. At that time the Prophet said the words as mentioned in Surah AI-Mu'min: 27 ; to the effect: "I have taken refuge in my Lord and your Lord against every arrogant person who does not believe in the Day of Reckoning." Here, the Prophet Moses is referring to that same thing and telling Pharaoh and his chiefs: "Look, I have sought Allah's refuge against aII sorts of violence from you : now you cannot harm me: but if you wish yourselves well, do not harm me. If you do not want to believe what I say, you may not, but you should never lay your hands on me, otherwise you will meet with catastrophic consequences" .
 

But if you do not believe me, then leave me alone." meaning in Urdu

اگر تم میری بات نہیں مانتے تو مجھ پر ہاتھ ڈالنے سے باز رہو"