When someone has wronged you
The Prophet ﷺ warned: between the supplication of the wronged and Allah there is no barrier.
اتَّقِ دَعْوَةَ الْمَظْلُومِ، فَإِنَّهَا لَيْسَ بَيْنَهَا وَبَيْنَ اللَّهِ حِجَابٌ
Beware the supplication of the one who has been wronged, for there is no veil between it and Allah.
There are no set words. Say it plainly, in your own language. This hadith is the Prophet's ﷺ assurance that it arrives.
The full narration
Narrated Ibn `Abbas:The Prophet (ﷺ) sent Mu`adh to Yemen and said, "Be afraid, from the curse of the oppressed as there is no screen between his invocation and Allah
Source
Ṣaḥīḥ al-Bukhārī · 2448
Ṣaḥīḥ
- Agreed upon as authentic (al-Bukhārī / Muslim)