Revenge is not always the best way of reacting against people but sometimes it is necessary because some people provoke others intentionally so as to get their reactions,create conflicts and fulfill their selfish desires.
The best way to revenge against such people is through silence.
Silence is very powerful, it will deny the person creating conflict or provoking you a point of contention.
The person will not know exactly what to say to you since you have not given him room to know what you think and conflicts will be averted.
All in all silence is so annoying and it hurts a lot. You can imagine talking alone and not getting a reply. I think its the worst revenge anyone could ever do to you.