How to react to unfair reviewer comments?
Take a very deep breath. The only way to react to a review that you believe to be in bad faith is to act as the bigger person. You can definitely mention that the reviewer disagrees with the other reviewers, but don't say anything about motives to the editor - there is no way that it can benefit you. The editor will have noted a difference in tone themselves and decided what they think about it. If you complain, and the editor has decided the review is valid, you just look defensive and bitter. If they have already decided that the third review is unfair, then you'll make no difference. 

If its possible implement the reviewers suggestions, do so unless you think it seriously harms the paper. Whether you think they are fair or not, as long as they don't hurt the paper, do it. This goes double for citing papers if they relevant; 90% of citations in a paper will be read after the work it done. 

"How should I behave for a positive outcome?" Open a bottle of champagne, celebrate your paper, be thankful you got through it despite the reviewer and forget about it. There is nothing you can do about this sort of thing. If you really want to do something support movements for open peer review and next time submit to a journal that practices it.