Lippi, looking to become the first coach to win the premier club competitions of both Europe and Asia, was satisfied with the outcome.
"It was the right result for this game," said the Italian 2006 World Cup winning coach. "It was a well-fought game. Seoul is a good attacking team. We caused Seoul problems and created opportunities that we would usually expect to score from but this time we could not."
The two away goals leave Guangzhou in a strong position heading into the Nov. 9 second leg in China.
"Those two goals are very important and we can't deny that," Lippi said.
Seoul is trying to become the fourth Korean team to lift the trophy in five years.
"It was the kind of game you want to see in the Asian Champions League final though we didn't the result we wanted," Seoul coach Choi Yong-soo said. "We now have a very difficult away game and we hope that we can get a good result. With the experience we have, I believe that we can do it."