I'll catch up with you is a cutscene in Resident Evil 2. It plays during the Leon A scenario.
Ada give Leon two items. She tells him that "she'll catch up with him later".
Ada Wong: "Leon, can you hear me?"
Leon: "Ada, did you find anything?"
Ada: "Right here. Think fast: here's one more!"
"Hey, I can't reach the ventilation hole. I'm going to have to find another way around. I'll catch up with you later."
Leon: "What? Ada, wait!"
Ada Wong:「レオン 聞こえる？」
Leon:「何だって？ ・・・エイダ 待て！」
- The "Think fast: here's one more!/もう一つ投げるわよ！" line is only uttered if the player picks up the shotgun shells with Ada.