The Frenchman broke the deadlock early in the second half to ease the tension at Tottenham Hotspur Stadium but then gave away a penalty with a reckless attempted clearance.
In the dying minutes, Spurs were grateful to Antonin Kinsky, who produced an astonishing save to deny the visitors a win.
Tottenham are now two points clear of 18th-placed West Ham with just two games left this season.
The Hammers lost 1-0 to Arsenal on Sunday, a result that guaranteed the safety of Leeds and Nottingham Forest and left Spurs and West Ham scrapping it out for the final relegation spot.
Wolves and Burnley are already down.
Spurs boss Roberto De Zerbi, who only arrived in late March, pledged his players would “fight until the end”.
“(When) we lost to Sunderland it was impossible to see ourselves two points above the relegation zone with two games to go,” he said.
“Now we have to be positive and work. We have the quality to make other points and stay up. I think we deserve to stay up. We will fight until the end.
“When you are fighting relegation you have to fight stronger with the legs than with the head. We have to push until the end. Even if we had won today, it wouldn’t have been finished yet.” (AFP)