The Cottagers now reside just above the drop zone in The Premiership and Tigana was furious with the way his troops folded at Manchester City on Wednesday after gaining the early advantage and knows his side have to start putting points on the board to make sure of safety.
The ex-Monaco chief told the club's official website: "We have to win five games maximum to be safe."
Fulham got off to a tremendous start at Maine Road on Wednesday night when in-form Steed Malbranque found the net after just two minutes.
The French star added to his fantastic hat-trick he picked up against Charlton Athletic in the fourth round of the FA Cup and came agonisingly close to making it five goals in two games when he struck the woodwork not long after scoring the opener.
From out of the blue though Kevin Keegan's men put their foot on the gas and blew The Cottagers away with strikes from Nicolas Anelka, Ali Benarbia, Marc-Vivien Foe and substitute Shaun-Wright Phillips.
