The midfielder, who helped Wolfsburg beat the drop in the Bundesliga in 2010-11, believes Rene Muelensteen's side are good enough to beat the drop this season
Fulham are hovering just a point above the bottom three after taking only 19 points from 21 league games so far.
The London club improved slightly under Rene Meulensteen, who took over from fellow Dutchman Martin Jol in December, but have lacked consistency, winning three and losing four of their last seven top-flight games.
Iran midfielder Dejagah avoided the drop with Bundesliga side Wolfsburg in the 2010-11 season and is confident of repeating the feat with the Craven Cottage club.
"It's not a good situation for us at the moment," he told the Fulham and Hammersmith Chronicle.
"There are a lot of teams fighting against relegation. I was in the same situation once with Wolfsburg. It's hard, but we managed to stay up.
"We have a good team and good players. If we all concentrate we can do it."