It will be the 11th time the franchises have met for the league championship, with the Celtics having claimed eight of the previous 10 confrontations.
Bryant has hit 50 percent of his shots and averaged 32 points a game in 13 playoff contests this season.
The Celtics, meanwhile, have played only one post-season game under the maximum. They were extended to seven games by both Atlanta and Cleveland before closing out Detroit in Game 6 of the Eastern Conference finals.
Boston won both regular-season meetings this season and will be at home for the first two games of the Championship Series. All games in the finals are scheduled to begin at 9 p.m. ET.
Swim Week Miami Beach 2014 [PHOTOS]