The Argentina striker struck in the late, late 2-1 win in Ukraine.
"It's a crucial victory in a hard game. Dynamo played very well, but in the second half we produced a good game and we deserved to win. They could score first, we had so many chances, but fortunately we were lucky in the last few minutes," said Milito.
"We are working to go as far as possible, it is not easy to do, as we saw tonight, the teams we face in this competition are very strong."