From
Chapter Nine - The Desert Campaign | 92squadron
"Two more dog fights took place in September. One on 26th when the Squadron was ordered off as top cover to Hurricanes and went out to Daba. They were attacked by 109s and Warrant Officer Kenwood and Pilot Officer Turvey were shot down but both baled out successfully. Flight Lieutenant Morgan and Pilot Officer Rose both shot down 109s and Pilot Officer Carpenter got a probable."
So this wasn't a sole 109 against 12 Spitfires... it was multiple 109s against Hurricanes and Spitfires. Both Turvey and Kenwood baled out successfully, so neither was Marseille's opponent. Also, this action was at Daba, which I think means RAF Al Daba, now El Debaa, 180km West of Alexandra , and 500km from Tobruk. Which, plus the Hurricanes, probably means German bombers also in the area.
All in all, I think not the action you're looking for.