Two goals from Max Gradel condemned table-topping Rangers to a second straight loss just a week after their 19-match unbeaten run came to an end.
"It was a good game but if we defend like we did we will get beaten by any team in the division," said Warnock.
"It is disappointing because that part of our game has definitely been our strength this season.
"I quite enjoyed the game because there was a great atmosphere generated by the crowd but we conceded two very poor goals. We probably caught Leeds at the wrong time because they are on a long unbeaten run."
Source: PA
Source: PA