Rattled by the relentless speed and aggression of the visitors, the Broncos were totally outplayed by a determined Eels outfit desperate to keep their top four prospects alive.
Parramatta star Semi Radradra had a night to remember as the enigmatic winger raced in four tries to decimate the Broncos right-edge defence.
The flying Fijian was at his destructive best in the opening stanza, completing his hat-trick inside the opening 20 minutes.
Things started disastrously for the home side as Adam Blair forced a loose offload from the first hit-up of the game.
Kirisome Auva’a accepted the gracious invitation to pounce for first points 12 seconds into the contest.
Parramatta, who are on equal competition points with the Broncos but behind on the scoring differential, kept their foot on the throat of the Broncos as the devastating Radradra found open space to race 75 metres and increase the lead to 12.
A pinpoint cross-field kick from former Bronco Corey Norman continued the procession for the Eels, as Radradra leapt above David Mead for his second try of the night.
The Fijian sensation had his third soon after.
Having riddled the opening 40 minutes with uncharacteristic errors, the Broncos needed to be first to score after trailing 30-10 at halftime.
However their typical robust defence continued to flounder as Radradra raced the length of the field to add the fourth try to his tally.
Brisbane made the most of the opportunistic period as tries to Herman Ese’ese - his first in the NRL - and Glenn reduced the deficit to 14 in his 214 match for the only NRL team he has known.
However, any momentum the Broncos gained was quickly snuffed out, and although their place in the top eight is assured, they will need to rebound this week against fellow Queensland side, the Cowboys, to keep their third place spot.
Glenn, who made his debut in 2009, was awarded the man of the match award by the Broncos for his strong efforts in the match..