Honestly, Ryze does fine... a bit later. You need to get a bit further into your Banshee's Veil to survive the burst. Even with MR, it still does a fair amount of HP, so you need to get the catalyst (or at least the red crystal) in addition to your Negatron. Rushing BV after your boots/Tear isn't a bad idea, and if you're really having a bad game, you can get Tear after Catalyst. Play conservative, harass only with your E (bounce off minions to stay well out of range), and farm. As Ryze, you scale far better that LeBlanc. Still a tough lane, but it CAN be done.