Nash opened the scoring with a first-period marker -- the 300th of his career -- and helped turn back a Philadelphia rally with another goal 7:42 into the final frame.
In between he assisted on a goal by Derek Stepan, who himself distributed three helpers as the Rangers broke a two-game slide and kept pace with the New York Islanders for the Eastern Conference's eight and final playoff spot.
Brad Richards provided a goal and an assist while Chris Kreider also found the net in the victory.
Henrik Lundqvist stopped 32-of-34 shots for New York.
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