I'm definitely in the minority here in that I'm a more serious weight-lifter than cyclist. In fact I do the opposite of what you're asking: I ride to improve my lifting strength.

You can't build lean, healthy muscle and make continual strength gains without mixing in solid cardio, so I use cycling to get my cardio to help me in the weight room. I don't think it works the other way around, i.e., I don't think lifting is gonna help your cardio shape very much at all.