His side joined Tottenham and Manchester United in the last eight with a ruthless 10-2 aggregate victory over Schalke on Tuesday.
The last time three English teams made the quarter-finals was in 2011.
"It is nice for English football that three teams are there in the quarter-finals and Liverpool too, maybe." said Guardiola.
"In the last decade Spanish teams controlled everything. It is good for us. For English football it's incredible."