I am an engineer officer working in an autonomous body guided by central govt. FR&SR. I am involved in a project of construction, where recently I differed with a decision recommended by a high power technical committee on grounds of technical reasons and scientific evidence. I accordingly put up a notesheet recording my disagreement with reasons and requested the Head of my Department to review any decision on the basis of the recommendations I disagreed with. My head of the department, while negating my observations before the CEO of the organisation made comments about my nature in an overtly aggressive way and ended up judging me as a person. He commented "He may be complimented as an immature and atrocious person" (referring to me). Since this is a written comment about me as person and since this notesheet is circulating in my organisation, I am of the opinion that I am a victim of slander.
Can someone advise me how I can have redressal to my grievance? Am I protected under law against such slander/defamation? What is the legal recourse to seek ammendment to such act of slander? What should I do to save my dignity and personal pride?