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 114levelcouldflipintosupport.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 -- ...