The Spiders (14-14, 5-8 Conference USA) led 51-47 with 5:57 left and Charlotte had four steals, three leading to points, during a 4-0 run.
After Lindsay's game winner, Javarris Barnett missed a 3-pointer but DeMario Mayfield came down with the offensive board. His would-be game winner was then blocked by Robbins with 1 second to play.
Anthony led Richmond with 17 points and Darrius Garrett had 12 rebounds.
Chris Braswell led the 49ers (12-13, 4-8) with 16 points and 13 rebounds.