بِاسْمِ اللَّهِ اَللَّهُمَّ جَنِّبْنَا الشَّيْطَانَ وَجَنِّبِ الشَّيْطَانَ مَا رَزَقْتَنَا

Bismillaahi, Allaahumma jannibnash-Shaytaana, wa jannibish-Shaytaana maa razaqtanaa

With the Name of Allah. O Allah, keep the I Devil away from us and keep the Devil away from that which You provide for us. The Prophet (ﷺ) said, “If anyone says this before sexual intercourse is consummated, the Shaytaan will not harm him if a child is born to them.

Reference: Bukhari: 141