people marginally senior to you lied on your feedback

I recently found out that there is one person (he just made Director earlier this year, whilst I am VP), who tends to lie about me during official feedback time. Strangely, my manager (MD himself) tends to put more weight on his lies than check the credibility for the feedback with other parts of the deal team. In particular, on those deals, MDs had my back, and expressed multiple times gratitude for my work. So to sum up - newly minted Director tells I am bad with clients and make mistakes, clients multiple times provided that the work was appreciated and on the spot, and MDs both know that D does not care about the deals, neither he understands my wotkstreams and often is even cut out from the calls or e-mail chains with the client.

How would you go about that hypothetical situation? I understand that people above you constantly belittle your work, and undermine what you did so they can position themselves as more critical as this is IBD. But this recent activity is at 10x magnitude that I have seen before, and just personally I find this puzzling. Also both I and Director are not in the same teams to make things clearer.

I know ultimately many will say to move on, which i will do, but need to sit tight for a few more months due to some other issues for which I need medical cover, and time off then and there, which would be totally ineffective if I were to start a new job.