The Supplication for returning Imam Mahdi

بسم الله الرحمن الرحیم 

 وَإِذْ نَجَّيْنَاكُم مِّنْ آلِ فِرْعَوْنَ يَسُومُونَكُمْ سُوَءَ الْعَذَابِ يُذَبِّحُونَ أَبْنَاءكُمْ وَيَسْتَحْيُونَ نِسَاءكُمْ وَفِي ذَلِكُم بَلاء مِّن رَّبِّكُمْ عَظِيمٌ

And when We delivered you from Faron's people, who subjected you to severe torment, killing your sons and sparing your women, and in this there was a great trial from your Lord.[2:49]