ashta-dasama -- the eighteenth; sangrame -- battle; agamini -- being about to happen; tat-antara -- at that instant; narada -- by the sage Narada; preshitah -- sent; virah -- a fighter; yavanah -- a barbarian (named Kalayavana); pratyadrisyata -- appeared.

Just as the eighteenth battle was about to take place, a barbarian warrior named Kalayavana, sent by Narada, appeared on the battlefield.