Joe Devera headed home in stoppage time to hand Barnet a 1-1 draw at Cheltenham.
The defender headed a Mark Marshall cross in at the back post to cancel out Wes Thomas's 61st-minute opener for the Robins, who have now won only once at home since October.
Bottom club Barnet were much the better side for the majority of the encounter and were only denied by some fine saves from Scott Brown.
Marshall was at the heart of the action in the early stages, unleashing a low drive on 13 minutes well saved by Brown while the same player wasted a gilt-edged chance on 17 minutes when he combined with Sam Deering but blazed his shot across the face of the goal.
Thomas opened the scoring in the 61st minute when he rifled home a low cross by Keith Lowe from six yards.
Ye the Bees refused to buckle and were level late on when Devera stooped to head home.