Usage (if you are using utf-8):
/usr/games/fortune %%PREFIX%%/share/games/fortune/ru_RU.UTF-8
or (if you are using koi8-r)
/usr/games/fortune %%PREFIX%%/share/games/fortune/ru_RU.KOI8-R

Example script to keep your fortune up to date placed in
%%EXAMPLESDIR%%/