This Russian phrase is actually incorrect
grammatically. The correct word for 'blyat' is 'blyad' (spelled 'блядь')
The direct translation is bitch (for suka) and whore (for blyad).
This combination of words can be used to offend someone, but it is mostly used when the person saying it is
frustrated with a situation.
Often used in
video games when someone is on the losing side.