Both teams got off to an aggressive start piling on the pressure.
Anderlecht scored on the first opportunity. Legaer took the visitors ahead in the eighth minute.
Alex Witsel was sent off just before half-time after an incident with Juhasz.
Standard's expectations for the second half were high, but Lukaku made Anderlecht's second goal with a header.
The closing stages of the match proceeded amid great chaos as both Traoré and Mangala scored own goals.
Anderlecht head the first division, while Standard is a full twenty points adrift in 8th place.
Racing Genk 3 Charleroi 1
Racing Genk travelled to Charleroi on Saturday night securing their first victory since 2 November.
Charleroi were first to score thanks to Sizza, but Töser was quick to equalise in the opening minutes of the second half.
Ogunjimi then took Genk into the lead. In the closing stages of the match Joao Carlos made it 3 - 1 for Genk.
It was the first time the Limburg squad managed to pocket three points under its new coach Frank Vercauteren.
Sint-Truiden 2 Lokeren 1
In Sint-Truiden v Lokeren Sidibe was first to score. Lokeren protested claiming the player had touched the ball with his hands, but in vain.
Guéjé soon managed to equalise for Lokeren. The match seemed headed for a draw, but Sidibe earned the title "man of the match" securing the home squad's second goal and victory for Sint-Truiden.
Lokeren are now joint bottom of the first division.
Roeselare 1 KV Mechelen 2
Roeselare got off to a great start against KV Mechelen, but Rukavytsja failed to score. Mechelen then made its presence felt. A first goal was disallowed, but then Gorius took the visitors ahead.
Roeselare managed to equalise in the 20th minute of the second half thanks to Dequévy but in the closing stages of the match Nong scored to secure a KV Mechelen victory.