The German star smashed home a 25-yard volley from Jamie Redknapp's pinpoint pass to open the scoring in the 2-1 victory.
Mark Yeates grabbed the second goal while Neil Sullivan saved a penalty in the second half.
It was Christian's first match action since the horrific thigh problem he sustained on Boxing Day - his amazing recovery from that career-threatening injury interupted by a knee ligament tweak that set him back a further month.
Meanwhile, Jamie continued his return from a five-month injury absence with a combative midfield display.
He followed up his 65-minute shift for the reserves against Arsenal last Wednesday with 85 minutes against Rangers.
Christian Ziege marked his return to action with a stunning goal in a private friendly against QPR at Spurs Lodge this afternoon.