First of all, I pray to Allah to protect you from all evil influences.

In answering your question, I cannot do any better than referring you to one of my precious answers; here is the link.

• My family (immediate) has become aware that some relatives are practicing black magic. It has also come to our attention that we are the target for these people. Members of my family are also sick, and the severity of their illnesses has increased ten-fold after visiting with these relatives. What can my family do to protect themselves against black magic?