Inter Milan's Lukaku nets late against Juve to keep Coppa Italia tie evenly poised
Belgium striker Lukaku rolled in from the penalty spot deep in stoppage time to keep both teams level ahead of the second leg in Milan later this month, before then being sent off following his celebrations in front of the home fans.
Juan Cuadrado thought he had given Juventus a lead to take to the San Siro in the 83rd minute of an intense match between bitter rivals in Turin which featured few goalscoring chances and ended with both teams at each other's throats.
Cuadrado and Inter goalkeeper Samir Handanovic were both sent off following the final whistle after a scuffle which continued as the teams went into the tunnel at the Allianz Stadium.
Lukaku's spot-kick is good news for Inter coach Simone Inzaghi who is under pressure after a poor run of results which has led to them dropping to fourth in Serie A.
Angel Di Maria was unlucky not to put Juve ahead just after kick-off with a low drive which was brilliantly tipped away by Mattia Perin.
Inter grew into the game and were probably the better team after the break, with Henrikh Mkhitaryan dragging a great chance a whisker wide in the 64th minute after a spell of pressure from the away side.
Juve should however have taken the lead in the 77th minute when Arkadiusz Milik somehow failed to poke home Cuadrado's mishit shot with the goal at his mercy.
Cuadrado then found what he thought was the decisive goal when he collected Adrien Rabiot's diverted cross and finished well past Handanovic before doing a victory jig on the sidelines.
But then Gleison Bremer gift-wrapped a chance for Lukaku to score his sixth goal of a troubled season at Inter with a silly handball, after which all hell broke loose.
On Wednesday struggling Cremonese try to secure what would be a shock cup final spot when they host in-form Fiorentina.