Is there a physical move that hits all opposing and if possible ALL Pokemon on the field?
Brutal Swing Bulldoze Earthquake Explosion Magnitude Petal Blizzard Self-Destruct
Source These moves all adjacent Pokemon in Triples and all Pokemon in doubles. There are no moves that hit all Pokemon in the field in triples, which are damaging. (though you have asked for doubles) And physical moves that target both foes:
Breaking Swipe Diamond Storm Glacial Lance Land's Wrath Razor Leaf Rock Slide Thousand Arrows Thousand Waves
Hope this helps.
Several.