Excalibur is a 1981 dramatic fantasy film directed, produced and co-written by John Boorman that retells the legend of King Arthur and the knights of the Round Table. Based solely on the 15th century Arthurian romance, Le Morte d'Arthur by Thomas Malory, Excalibur stars Nigel Terry as Arthur, Nicol Williamson as Merlin, Nicholas Clay as Lancelot, Cherie Lunghi as Guenevere, Helen Mirren as Morgana, Liam Neeson as Gawain, Corin Redgrave as Cornwall, and (then relatively unknown) Patrick Stewart as Leodegrance. The film is named after the legendary sword of King Arthur that features prominently in Arthurian literature. The film's soundtrack features the music of Richard Wagner and Carl Orff, along with an original score by Trevor Jones. Wikipedia
Mordred: I've come to claim what is mine, Father.
Arthur: Show yourself.
(Mordred takes off his mask)
Arthur: I cannot give you the land. Only my love.
Mordred: That's the one thing of yours I don't want! The quest knights have failed. They're all dead. And YOU... are dead, too. I shall come back and take Camelot by force!