Aggression through insult and abuse, and patience in enduring it

Question:
My colleague at work has been aggressive toward me with insults and abuse in front of people, because he is older and physically stronger than I am. I am a young man, and he is fifty years old. I could not sleep last night because of the oppression I felt. If it were not for the fear of Allah, I would have killed him. I have been relieved from the torment of oppression; every time I see him, the oppression and anger increase, along with the means of Satan. What should I do in this regard?

Answer:
You must fear Allah, be patient, seek reward from Allah, and beware of obeying your self and Satan. There is no harm in complaining to those in authority above him, if you are able to do so, so that they may give you your rights. If they do not give you your rights, how many have been wronged whom Allah has avenged on the Day of Resurrection? What is with Allah is better and greater. I am your Lord, and I am with you until the Day of Judgment. Praise be to Allah. One may not retaliate against a bad deed with something greater or more numerous than it, for that would be injustice in this matter. A bad deed is fought with a bad deed of the same kind; an insult is met with an insult. But to meet an insult with killing is a great harm.