Pray that they accept Jesus Christ as their savior
This must NEVER happen.
For those with a discerning eye, taqiyya is all around us. (a) Muslim refugees have pretended to convert to Christianity; (2) an Islamic gunman gained entrance inside a church by feigning interest in Christian prayers.
Examples abound on a daily basis.
In Turkey, to get close enough to a Christian pastor to assassinate him, a group of Muslims including three women feigned interest in Christianity, attended his church for over a year, and even participated in baptism ceremonies.
Said the pastor: "These Muslim people had infiltrated our church and collected information about me, my family and the church and were preparing an attack against us. Two of them attended our church for over a year and they acted like family."