if they have faith in all that you believe they will have the right guidance but if they turn away it would be for no reason other than their own malice. god is a sufficient defender for you against them he is allhearing and allknowing.
فإن آمنوا بمثل ما آمنتم به فقد اهتدوا وإن تولوا فإنما هم في شقاق فسيكفيكهم الله وهو السميع العليم