A court statement today said the group, members of the Jabhat al-Nusra organization, recruited the militants in Spain's north African enclave of Ceuta and in neighboring Morocco.
The court said that between 2012 and 2013 the group sent some 28 combatants to Syria. At least eight died in attacks that claimed hundreds of victims.
All 11 are Spaniards of Moroccan background from Ceuta, where they were arrested in 2013.
The cell's leaders, Karim Abdesalam Mohamed and Ismail Abdelaftif were sentenced to 12 years while the rest each received 10-year sentences.