[binary132]

I thought I was the only one who perceived an audible similarity between Portuguese and Russian.

[dgan]

I am native Russian speaker, and work/visited Portugal. It definitely tricks me when not paying attention, its very similar sounding

[mh-]

I speak neither, and both also sound similar to me depending on the accents of the speakers.

[djmips]

I had that too but it was Brazillian Portuguese where I noticed it.

[maleldil]

The characteristics that make pt-PT sound similar to Russian are largely absent in pt-BR.