Well, I'll try to show you the path. ;D
In the frequency dominium, a transfer function is Vo(w)/Vi(w), isn't it?
The first thing to do, is to find Vo(w). Apply a simple nodal/mesh analysis to do that:
->You know what are the resistor impedances (r) and capacitor impedances (1/jwc).
->You know that V- = V+, for an ideal OPAMP, and that there is no current flowing through V+ and V- terminals.
Well, to find the magnitude, is simple, you were able to do find.
To find the phase, is simple as well. Let the H(w) be the function that you want to find the phase.
So the phase will be arctan(|Im{H(w)}|/|Re{H(w)}|).