Dealing with a Rafidi disbeliever in the school

Question:
Honorable Shaykh, may Allah preserve you. We work in a school where there is a Rafidi disbeliever. We seek your guidance on how to deal with him regarding eating with him, sitting with him, and smiling at him under the pretext of winning his heart. Please note that he has been in our school for several years. Also, I know from your eminence a statement on how you conduct dialogue

Answer:
If you are able to transfer him and remove him from your school, do so; it is obligatory upon you. If you are not able, then leave him in his job until Allah facilitates his removal. However, do not allow him access to your secrets or to look into your affairs, and do not be overly friendly with him. As for working with him in the office, or giving him ledgers to copy or organize, or any other matter, there is no harm in it. It is a permissible matter, whether he does it or someone else. And do not let him lead you in prayer. It is not permissible for him to perform tayammum. As for him praying with you, let him pray with you. Yes.