Steven Naismith scoring a double to go alongside goals from Johnny Heitinga and Magaye Gueye.
"We wanted as professional a performance as we could and that's as professional as it gets," Martinez said.
"It was a real test and we always looked a threat on the counter. It was a performance that was as good as it gets when you take it all into consideration.
"We were brave, really attacking but the incident with Bryan affected everyone. Those injuries give you a bad taste."
On Naismith, not always a regular starter, he added: "He is someone who has played that position with Scotland and he has very good movement. He showed what he can do."
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