The former Brighton and Charlton midfielder took just 26 minutes to put the Reds ahead, before Neil Jenkins put the game beyond the visitors five minutes later.
Robinson had signed for Crawley three days previously and had only trained with his new team-mates once before the game.
But he made himself an instant hero when he capitalised on a poor punch by Shrimps keeper Adam Sollitt from a Simon Wormull cross to blast into the roof of the net.
Robinon was then indirectly involved in the Reds' second goal moments later. He temporarily swapped wings with Jenkins, who was in the right place at the right time to dispossess the dallying David Perkins and slot home.
Morecambe went into the break feeling slightly aggrieved to be 2-0 down. They had enjoyed brief spells of pressure, especially early on when Crawley keeper Phil Smith was forced into an unorthodox save with his shoulder from a Garry Hunter drive.
Hunter should have done better again just after half-time when he was released by Michael Twiss, but mishit his shot straight at Smith.
Shrimps leading scorer Twiss did better himself 12 minutes from time, cutting the deficit in half by converting Hunter's cross, but Crawley held on to maintain their hopes of top-five finish and a play-off place.
Robinson had signed for Crawley three days previously and had only trained with his new team-mates once before the game.
But he made himself an instant hero when he capitalised on a poor punch by Shrimps keeper Adam Sollitt from a Simon Wormull cross to blast into the roof of the net.
Robinon was then indirectly involved in the Reds' second goal moments later. He temporarily swapped wings with Jenkins, who was in the right place at the right time to dispossess the dallying David Perkins and slot home.
Morecambe went into the break feeling slightly aggrieved to be 2-0 down. They had enjoyed brief spells of pressure, especially early on when Crawley keeper Phil Smith was forced into an unorthodox save with his shoulder from a Garry Hunter drive.
Hunter should have done better again just after half-time when he was released by Michael Twiss, but mishit his shot straight at Smith.
Shrimps leading scorer Twiss did better himself 12 minutes from time, cutting the deficit in half by converting Hunter's cross, but Crawley held on to maintain their hopes of top-five finish and a play-off place.