When you are walking with God, you don't have to worry about your so called haters. You don't have to worry about those who talk about you behind your back, are jealous of you, envy you, or even hate you. You don't have to fight with anyone. God is the one who defends you.
Your response should be, if God is for me who can be against me? Don't worry, just keep on walking and living for Christ!