No suit, prosecution or other legal proceeding shall lie against
     (a) the Central Government or a State Government or any officer or authority of the Central Government or State Government or District Magistrate or any officer authorised in this behalf by the Government or the District Magistrate or any other authority on whom powers have been conferred under this Act, for anything which is in good faith done or purported to be done in pursuance of this Act or any rule or order made thereunder; and
     (b) any serving or retired member of the armed forces or para-military forces in respect of any action taken or purported to be taken by him in good faith, in the course of any operation directed towards combating terrorism.