After the Easter Monday defeat of Manchester United set up a Wembley FA Cup semi-final with Manchester City, last season's Champions League winners beat Rubin Kazan 3-1 in the Europa League quarter-final to take a commanding lead into next week's second leg in Moscow.
Terry was an unused substitute against United after featuring in the loss at Southampton fewer than 48 hours earlier when the Blues slipped to fourth in the Premier League.
The former England captain has now urged his troops to claim a third successive Stamford Bridge win against Paolo Di Canio's relegation-threatened Sunderland on Sunday to consolidate their place in a Champions League qualifying spot.
"We must win and keep winning games in the league and really push," Terry said. "Because that is what this club feeds off - the Champions League. We must be involved in that."