It’s one of the many specialized districts. You have to build a holy site and have theocracy researched. This will convert some of the citizens of that city to Followers of your Religion. To do so, move the unit adjacent to a City Center-or inside it, if the city is yours-and use the Spread Religion action. Religious units ‘ primary purpose is to spread their Religion to other cities. If you don’t have a religion of your own, you can take some Holy Sites (anyone is fine) and make apostles from their religion to combat the offending one.The most straightforward solution is simply to declare war and kill all their religious units.If you’re not going for a religious victory yourself. How do you fight with the apostles in Civ 6? 13 What does evangelize belief do in Civ 6?.12 Why can’t I build religious units Civ 6?.10 How do you revive religion in Civ 6?.9 How do you defend against religion in Civ 6?.3 How do you send missionaries in Civ 6?.2 How do you use religious units in Civ 6?.1 How do you fight with the apostles in Civ 6?.