Discriminated by senior researcher because of my ethnicity I am working on a collaborative project between different parties, and there is a senior researcher who underestimates constantly what I ever propose or speak, and  he tries to illustrate that I am doing nothing new.

Although I have proven for the second time that there is a limitation in the study, he doesn't listen. I have witnessed that he respects and appreciates Asian students more than me.

Of course this just my side of the story, but I know many people from his country do not like women wearing traditional clothes as I do.

I don't know how to solve this problem, but I am not the only case. Many others are being judged by him based on their complexion, appearance, and garments.

I am kind of frustrated, trying to be amicable. Of course, there are other members in the project who appreciate me, but this senior researcher has clout over them.

What I should do in that case?

EDIT

I know I cannot change some people opinion about people from specific religion or ethnicity, what I can do psychologically to override that, I am trying to do my best as much as I can, but still, I had the same behavior.
In the comments you mentioned that getting an ombudsperson involved was not an option for you. However, your advisor does not necessarily need to know that you talked to the ombudsperson. Ombudspersons are often required to keep discussions confidential unless you explicitly tell them otherwise. You of course need to check that before with your ombudsperson before you go that route. Just discussing your options face to face with another person who has to treat that discussion confidentially is probably of enough value in and of itself. And maybe (s)he can do even more.