What is the correct action to take regarding Christian missionaries who receive support from the security authorities?

Muslims must be dissuaded from responding to missionaries and warned against them. It should be made clear that Christians are disbelievers and will abide eternally in Hell if they die upon a religion other than Islam. This can be achieved by utilizing fatwas that elucidate the Gospel's glad tidings of Muhammad (peace and blessings be upon him), and that expose the corruption of the altered Christian religion, their errancy, and how to refute them.