Russia were just minutes away from their first win against the five-time world champions in their fifth meeting against them since the end of the Soviet era, but allowed Fred to score with a tap-in in the 90th minute to give Brazil a 1-1 draw in front of 35,000 fans at Stamford Bridge.
Although upset about the fan, who was quickly bundled away by stewards, Capello said he was happy with the result.
"I am happy with the way we played, we showed a lot of team spirit," the Italian told a packed media room.
"My only disappointment is that after a supporter came on the pitch my players lost their concentration and against Brazil you cannot lose your concentration."
"When I was a coach in Portugal we were playing against Estonia and a very beautiful girl came on the pitch topless, everyone was looking at her - even me. At the time the game was 0-0, and we ended up winning it 2-0.
"I don't know if the guy today distracted the Russian team, but who knows, it can happen."
"The most important thing I saw tonight was a great team spirit," he said.
"You need that as you build and go forward. It was a good result against Brazil and when when you play against a top team like Brazil you learn a lot about individuals and the team as a whole.
"I made some changes, brought some players in, and it takes us on another step towards our target. We can do something very important for Russia - which is to qualify for the World Cup finals in Brazil."
Capello, back in England where he coached the national team for four years, taking them to the World Cup in 2010, was asked what he thought of England's chances in their qualifier against Montenegro on Tuesday.
"It's not my problem," beamed the Italian, "and tomorrow I will probably watch the France v Spain game on the television."
