Foster – who set-up Nicky Clark’s opening goal in a 2-0 win on Wednesday night – completed only his third 90 minutes since returning from injury at the start of May, and has played a significant role since getting back into the squad.
Although the Light Blues have established a commanding leading into Saturday’s game, Foster knows that Hibernian are more than capable of scoring twice against Rangers, as they have done it three times already this season.
"Hibs are capable of scoring two goals, and I think they've shown that already this season,” he said.
“Granted, we'll be well disciplined and won't be giving up chances easily, but we've got a great lead to take into the game.
"Set-pieces are massive. Allan's delivery is great, as is their movement in the box, but I thought we defended them really well, and other than a chance for Malonga, we didn't really give them anything at all."
Rangers have only managed to keep two clean sheets in their last eight games, conceding eight goals in between the 4-0 win against Raith Rovers and Wednesday night’s win.
A repeat defensive performance will be needed at Easter Road from Foster and the rest of the backline, with the first goal likely to be crucial.
The Light Blues will be without the Ibrox crowd that Foster hailed as the best he’s witnessed since returning to Rangers. The right-back is adamant that the fantastic support makes a difference, but the number of Gers fans at Easter Road will be greatly reduced.
Foster’s caution of Alan Stubbs’ side’s goal scoring ability will need to be carried by the rest of the Rangers team come Saturday afternoon as the Light Blues look to continue their journey back to the Scottish Premiership.