The Ectaco Jetbook and Jetbook Lite display in Cyrillic, have Cyrillic labels (as well as
Latin) on the nine numeric/text entry keys, and has a Rus>Eng and Eng>Rus dictionary.
Their initial marketing included a lot of Russian material including a sales video clip.
http://www.jetbook.net/
The prices are MSRP from them, the readers are usually available for considerably less
elsewhere.
They, Ectaco offer other book readers at their main site.
Luck;
Ken