The 25-year-old has not travelled to Ukraine with the rest of the Magpies squad and sits out the last-32 second-leg tie along with Italian full-back Davide Santon
The France midfielder has been sidelined since December through injury and has resumed full training following a bout of illness but did not board the flight to Ukraine and will have to support his team-mates from Tyneside.
|10/1||Newcastle are 10/1 with Coral to beat Metalist 1-0 in their second-leg clash
"The Europa League is very important for us," Ben Arfa told the Shields Gazette.
"If we qualify, it will be a very good thing for the club. I think we can go far in this cup."
The tie remains delicately poised after a goalless stalemate at St James' Park in the first leg, with Papiss Cisse having two goals ruled out for offside.
And after a relatively forgettable campaign, Ben Arfa revealed that finishing the season strongly is the priority.
"The most important thing is the Premier League – we have to finish higher," he added.