Belgium defender Vincent Kompany left the field hurt as his side and Portugal drew 0-0 in an evenly balanced friendly on Saturday as each side showed attacking intent ahead of this month's World Cup.
Kompany's departure in the 55th minute may be a cause for concern for the hosts ahead of the tournament in Russia. The central defender hurt himself when he lunged for the ball and almost immediately left the pitch.
Both Belgium and the European champions had promising phases, Portugal's Bernardo Silva in particular creating chances at the end of the first half.
Belgium's best chance fell to defender Jan Vertonghen, earning his 100th cap, as he forced goalkeeper Beto into an acrobatic save midway through the second period.
Belgium began with their strongest possible 11, apart from the injured Axel Witsel and Thomas Vermaelen, and a trial three-man defence.
Portugal coach Fernando Santos made six changes from the team that started Monday's 2-2 draw with Tunisia and were again without Cristiano Ronaldo, still resting after last weekend's Champions League final.
Striker Andre Silva started on the bench, giving 21-year-old Goncalo Guedes the chance to shine in attack.
The hosts made five second half changes to try out some of their fringe players before coach Roberto Martinez cuts his 28-man squad to 23 on Monday.
Portugal host Algeria on June 7 before their World Cup opener on June 15 against Spain in a group also featuring Morocco and Iran.
Belgium will play further friendlies against Egypt on June 6 and Costa Rica on June 11. They open their World Cup campaign on June 18 against Panama, before also facing England and Tunisia in Group G.