Shamal George also featured in goal for Liverpool with the keeper another due to depart.
Ejaria, Tom Clayton and Elijah Dixon-Bonner were all on the scoresheet for Neil Critchley's team.
The home side, managed by former Reds star Craig Bellamy, took the lead from the penalty spot but Ejaria soon pounced to level the affair.
Anderlecht regained the lead before Clayton made it 2-2 following a header from a free-kick.
Dixon-Bonner put the Reds 3-2 up with a superb strike but the home side earned a share of the spoils with a late equaliser following a set-piece.