Celtic manager Gordon Strachan turned his attention to next week's Old Firm encounter after beating Gretna 3-0.
"Once we scored we were reasonably comfortable," he told BBC Sport. "But we played a lot better in the previous two games without getting the breaks.
"I'm really looking forward to it," he said when asked about the forthcoming visit to Ibrox.
"These games are a mental and physical test. If you are not prepared they will chew you up and spit you out."
Rangers have a three point lead over Celtic and have played a game less.
Celtic ended a run of four games without a win at Almondvale but Strachan pointed out the excellent league form of both sides.
"Their form has been exceptional - they've won their last 12 games," said the manager.
"In our last 11, we've won 10 and drawn one."
Rangers face a pile-up of games due to their continued involvement in the Uefa Cup, Scottish Cup and two outstanding SPL matches.
Celtic chief executive Peter Lawwell
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