The recent scandal was dealt with by the company's public relations team.

dealt 是动词 deal 的过去分词形式，在句中与 with 搭配构成短语动词 deal with，意思是“处理、应对”。deal 本身有“分配、给予”的含义，加上 with 后表示“与……打交道、处理某事”。这里用被动语态 was dealt with，表示“被处理”的意思。