Cahill was given the nod to start Sunday's 2014 FIFA World Cup qualifier against
Cahill is seen by many as Terry's ultimate successor at Stamford Bridge.
And although the pair have not spoken specifically about the England situation since the latter accused the FA of making his position "untenable", Cahill had little doubt what his team-mate thought.
"I've not really had that one-to-one conversation about that particular situation," Cahill said.
"He's always encouraged me and I hope he wishes me well."
The 5-0 thrashing of one of the worst teams in international football would have told England boss
"You don't really take too much out of that because you don't really get asked many questions in the game," Cahill said.
"It's always nice when that happens."
The 26-year-old added: "I've been pleased with my performance. It's just a matter of getting the ball and trying to bring it out from the back and give it to those players that can create chances."
The one area in which Cahill did compare unfavourably to Terry was in front of goal, the defender wasting two chances his team-mate would normally gobble up.
"I don't know how I haven't scored," Cahill admitted.
"The one that I missed at the back post, the one that got blocked.
"Frustrated in front of goal but it's not really what I'm there for.
"I'll let the other lads do that, which they did."
Arsenal midfielder Jack Wilshere hopes the latest operation on his troublesome ankle will prove the last as he looks to recover full fitness for both club and country next season.