As a male MRA myself, I'm not necessarily aware of the challenges that female MRAs might face, though I read that they often are treated as traitors to the feminist cause, of having internalized misogyny, of opposing women's rights, etc.

What can male MRAs do to support female MRAs who face such backlash?

I generally try to point out that I support women's legitimate rights and recognize the need to ensure that we not promote male rights at the expense of women's legitimate rights (not referring to feminist privilege of course).

I try to call out real misogyny when I see it.

What else can male MRAs do yo support female MRAs?