The Bisons are 9-7 overall, 4-5 in the A-Sun. Florida Atlantic fell to 4-13 overall, 4-6 in the conference.
"This was a great defensive team win which we desperately needed," said Lipscomb coach Scott Sanderson. "It all starts with defense. This game was huge for us. In the conference you have to win your games at home."
Guyette hit four straight 3-pointers in the first half, scoring 14 of his team-high 16 points before intermission.
"We have been struggling so bad offensively that we decided to play him," Sanderson said. "He has come up big for us. He kept us within striking distance in the first half with those shots."
The Bisons trailed 43-40 at the half. Florida Atlantic never trailed in the first half, leading by 15 points 29-14 with 8:11 left.
"They were scoring at will in the first half, and we were getting way, way behind," Sanderson said. "Our zone wasn't very good, but we were able to slow their rhythm down a little bit."
"Shaun came in and gave us a huge lift," Sanderson said.
Robinson sparked the opening rally of the second half with a pair of lay ups and a free throw as the Bisons took over the game with a 9-0 run to lead 49-43 at 15:30.
"In the second half we went back to man-to-man, and in the first 9 ½ minutes they don't score a field goal," Sanderson said. "We held them to seven field goals, and most of those were on our turnovers."
The Bisons also held Florida Atlantic to five assists for the game
The Bisons would lead by 11 on three different occasions, the last at 68-57 with 2:52 left. Florida Atlantic then went on a 9-0 run of its own to finish the game. Pierre Tucker missed a 3-pointer for Florida Atlantic with nine seconds left.
Corey King and Charlie Jenney made their first starts of the season for the Bison. King was instrumental in helping the Bisons break Florida Atlantic's press.
"I knew two days ago I was going to play Corey," Sanderson said. "He is the best at taking care of the ball against pressure. The ones he turned over late were because he was dead tired."
Fisk played a solid all-around game. He also had seven rebounds, a game-high six assists and three steals, including his last one with three seconds left to ice the game for the Bisons.
The Bisons held a 40-36 advantage on the boards.
Mike Bell led Florida Atlantic with a double-double with a game-high 18 points and a team-high 10 rebounds.