Complex sentence: Attacks of the Fire -, Grass -, Bug -, Ice -, and Steel-types do little damage to Torchic, and Torchic do little damage to Fire -, Water -, Rock -, or Dragon-types.
Split into simpler sentences: Attacks of the Fire -, Grass -, Bug -, Ice -, and Steel-types do little damage to Torchic. Torchic's Fire-type attack do little damage to other Fire-types, as well as Water -, Rock -, and Dragon-types.