Transmission of electric energy at high voltage levels is mainly performed by overhead lines. Nowadays, an increasing amount of power grid operators are replacing overhead transmission lines by underground cables. Cable presence in power systems may have consequences for the behavior of the total system, since cables have much larger capacitance than overhead lines. In the Netherlands, a new mixed 380 kV connection is under construction, in which four underground cable sections are embedded between overhead lines. In this paper, the behavior of this mixed line-cable-line configuration is studied during lightning events. The study is performed by using a transient simulation model of this mixed 380 kV system, which is developed in PSCAD.