ConocoPhillips (NYSE:COP) announced it will buy Marathon Oil Corp (NYSE:MRO) for 22.5billion,withthedealexpectedtocloseinthefourthquarter.Below,let′sdigintohowbothstocksarereactingtothebigmerger. COPwaslastseendown3115.33, but former resistance at the 114levelcould flipintosupport.DespitebeinginpullbackmodesinceanApril12,morethanone−yearhighof135.18, shares still boast a 14.6% year-over-year lead.Meanwhile, MRO is up 8.4% at $28.68 at last check -- it ...