The fourth seeded Indian pair lost the summit clash 4-6 5-7 to the third seed rivals.
The result meant that left-handed Divij now has ended runner-up for the sixth time this season.
He has won two Challenger titles in 2012 -- with Vishnu Vardhan at Thailand and at Busan with Yuki Bhambri.
Divij and Raja earned 80 points each and shared 2650 euros.