extremely minimal risk to the engines to fly into dumped fuel. Mostly because it's dispersed over seconds in an airstream
A directed fuel leak is another story and if ingested directly into an engine core will cause the engine to surge/stall often emitting flames out the inlet. Military fighters with long inlets are spectacular in this case,
High-bypass engines on large jets are more likely to centrifuge the fuel out the bypass. Its a stretch of combinations but one is more likely to get into trouble sucking pooled fuel off a runway surface if going very slow.