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The Force was very strong for a 'Star Wars' fan battling terminal cancer -- J.J. Abrams and Disney set him up with a private screening of 'The Force Awakens' after a viral campaign to make it happen.

32-year-old Daniel Fleetwood got his final wish when studio execs showed up at his Texas home Wednesday and let him see an unedited version. Daniel was diagnosed with inoperable spindle cell sarcoma in July, and doctors told him he won't make it to Christmas ... when the movie premieres.

Daniel's wife, Ashley, tells us he loved the movie. She can't say much more because she had to sign a confidentiality agreement. She says they watched on their own TV, but it was played from Disney's equipment -- gotta make sure the flick doesn't get jacked.