After becoming the 54th, and smallest, member of UEFA in May, Gibraltar debuted with a credible draw in Portugal.
Bula said drawing against a side ranked 65th in the FIFA world rankings was a great result after instructing his team to play on the counter-attack.
"It's a dream come true and a dream start for us," he said.
"You know having the first UEFA game the emotions were there and it meant a lot to us.
"Getting a draw against Slovakia what more could I ask for and Slovakia have played very well and put a lot of pressure on us and we knew they were going to do it.
"We were just hoping for the counter-attack and that is the game we played. They are very high in the ranking and to come here and get a draw is a dream come true."
'I love my job. I love being able to play this sport. In the end, there’s something addictive in winning for me' Alexia Putellas speaks about what drove her back from an ACL injury to lift the World Cup
Alexia Putellas: "We’re already the only club to have won the men’s and women’s Champions League, so the only thing even more historic to do than that would be to win it in the same season"
