Protection from black magic

Q: Can you please tell me what prayers I should say or du'a to keep bad people away from myself and my family as there are some nasty people in the family who I am afraid of in case they do black magic on me and my family. I know they are already involved heavily with the devil. I trust in Allah but I feel it may be necessary to protect ourselves.

Wazifa to receive one's visa

Q: I want a wazifa for visa. I am from Pakistan, I am now in Oman. My Kafil is not giving me a visa. He has my passport and he is now saying that he might send me back. I have had a lot of problems about moving out of Pakistan. Please give me a wazifa for my problem. As soon as possible.

Consuming Halaal

Q: I am working away from home and staying in camp accommodation. I asked and confirmed from the manager of the mess about the meat. He said everything is halal.This camp is in Australia. Am I allowed to eat the meat?