The Slowbro uses Water Gun, a water-type fast move, but the move is not very effective against the Exeggutor.
2.
The Exeggutor's fast move is Zen Head Butt. Since the move is a psychic-type, the Slowbro reduces the damage of the move.
3.
Once the required energy is charged, the Slowbro uses Water Pulse. However, the Exeggutor cut the damage of the move.
4.
The Exeggutor is in the lead due to its higher CP than that of the defender, Slowbro. Finally, the exeggutor uses Solar Beam, a grass-type charge move, as a decisive brow that defeats the defender.