The 32-year-old defender made back-to-back appearances for the first time since February by featuring in Sunday's 2-0 defeat of Swansea which saw Chelsea consolidate their position in the Barclays Premier League top four.
Terry has hinted at a possible England return but Benitez declined to comment on the prospect of the skipper coming out of international retirement which was prompted by his Football Association charge and subsequent ban for racially abusing QPR's Anton Ferdinand.
"That is not my business," Benitez said. "My business is to keep him as fit as possible for every game.
"I only speak to him about Chelsea."