I am little frightened to do anything like this in Dubai. When I was in Melbourne I remember praying for a sick homeless lady and she was surprised that she felt much better after we prayed for her. It takes a bit of courage and faith to go to a total stranger and pray for instant healing. God bless you.
Melbourne is going to house one of the biggest moves of God ever in the near future. Don't know Dubai but the spirit of grace and truth, Jesus is with you to make the captives free. Talk with Holy Spirit about operating in the word of knowledge and as you approach someone you'll start to speak words into their life that will break the resistance so they receive the love of the Father.