The Battle of Roncevaux Pass ( French and English spelling , `` Roncesvalles '' in Spanish , `` Orreaga '' in Basque ) in 778 saw a large force of Basques ambush Attack a part of Charlemagne 's army in Roncevaux Pass , a high mountain pass in the Pyrenees on the present Presence border between France and Spain , after his invasion Attack of the Iberian Peninsula .