Inter Milan substitute Nicolo Barella scored a stoppage-time equaliser to deny Slavia Prague just their second Champions League group win.
The Czech side have reached the group stage for the second time but it was Stefan de Vrij and Danilo D’Ambrosio who went close for the Serie A leaders.
Yet Slavia deserved the lead when Peter Olayinka opened the scoring.
But early in the eight minutes of added time, Barella bundled in after Stefano Sensi’s free-kick hit the crossbar.
In the second early kick-off, Lyon and Zenit St Petersburg settled their encounter 1-1 as well.