Both the vessels suffered severe damage at their bows and had to undergo major repairs. The collision is widely reported to have been caused due to (mis) use of VHF for navigation.
The (slightly biased and with obvious misconsistencies) official report by the French flag of convenience can be found here -
The vessel was subsequently renamed MOL Prestige
Type of ship : Cellular Container IMO Number: 9321029 Flag: Panama MMSI Number: 351861000 Length: 292.0m Beam: 40.0m Callsign: 3EGH8