The Roja coach is aware of the kind of damage that the Bayern Munich ace can do, but claims the reigning champions can ill afford to concentrate on stopping only one player
However, the Roja boss also believes it would be a massive mistake for his troops to focus solely on nullifying the 29-year-old, arguing that les Bleus are not completely reliant on the winger to create and score goals.
"Do I fear Franck Ribery? Yes, but Karim Benzema and Samir Nasri are also world-class players," Del Bosque told Bild. "It will not be easy to beat them."
La Roja are heavy favourites to progress to the last four, particularly in light of Les Bleus' dismal 2-0 defeat to already-eliminated Sweden in their final game in Group D.
However, Del Bosque insists he has not allowed himself to even entertain the thought of a semi-final showdown with Portugal.
"I am only thinking about the match against France," the former Real Madrid trainer added. "Anything else would be disrespectful to them."
Spain's Euro 2012 quarter-final clash with France will kick off at 20:45CET.