Around Arabia - as well as in the Himalayas - these obductions completely obliterated the Neotethyan ocean, which in this time frame is represented only by a few exotic blocks and by Permo-Triassic pelagic sediments found at the sole of the Cretaceous ophiolites.
Source: wiktionary
These frictional forces slowed the obduction of the ophiolite onto the continental margin and obduction ceased after the nappe was transported 100–200 km.
Source: wiktionary
Ongoing accretion at a subduction zone, and the obduction of intact ophiolite slabs, are not considered to be collision.
Source: wiktionary