Both were initially named in the starting side to face the Titans but coach Stephen Kearney admitted they were in doubt to play after taking limited part at training on Thursday.
The pair remain integral to the Warriors finals hopes and won't be risked this week but it is hoped they will be fit to return for next Saturday's difficult away assignment against St George Illawarra in Wollongong.
Neither player made the trip across the Tasman with the side yesterday, but both are expected to join their teammates next Monday, with the Warriors remaining in camp in Australia in the lead-up to facing the Dragons at WIN Stadium.
Luke's absence means bench forward utility Jazz Tevaga and versatile reserve hooker Karl Lawton are likely to share the No 9 role.
Back-rower Leivaha Pulu is also among the extended reserves and looms as the likely replacement for Harris.
The 28-year-old is set to play against his former club in his first game back after recovering from a foot fracture that has kept him out of action since mid-April.
The eighth-placed Warriors need to win at least two of their remaining six games to qualify their first finals appearance in seven years.
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