"It does sicken you," he said, "when you've worked hard to get in front, you've got in front and somebody's dived to win a penalty.
"There's a time and a place to do it. It's got them back in the game: it's probably the only chance they had and if we hadn't raised our game they could have walked away with a draw. If it helps you, fair dues to them."
Boyd added: "He was trying to get his team an advantage and if it happened up the other end we wouldn't be complaining.
"It is part of the game and it is going to happen. If you've got the chance to get your team back into a Euro qualifier by doing that then you're going to do it.
"I wasn't happy about it and the rest of the team were the same but once it's given I think we've shown great character to come back from it.
"These things can happen at both ends. If it happened with one of our players then we wouldn't be complaining."